Relevant bibliographies by topics / VAWT

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'VAWT'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 January 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'VAWT.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "VAWT"

1

Tong, Minhui, Weidong Zhu, Xiang Zhao, Meilin Yu, Kan Liu, and Gang Li. "Free and Forced Vibration Analysis of H-type and Hybrid Vertical-Axis Wind Turbines." Energies 13, no. 24 (December 21, 2020): 6747. http://dx.doi.org/10.3390/en13246747.

Full text
Abstract:
Vertical-axis wind turbines (VAWTs) are compact and efficient and have become increasingly popular for wind energy harvesting. This paper mainly focuses on free and forced vibration analysis of two different types of VAWTs, i.e., an H-type VAWT and a new hybrid VAWT. The H-type VAWT has a lower cost, while the hybrid VAWT has a better self-starting capability at a low wind velocity. Both of them can be used for wind energy harvesting. By using the assumed modes method, the two VAWTs are simplified by a single degree-of-freedom (SDOF) model. By utilizing the method of structural mechanics, a multi-degree-of-freedom (MDOF) model is developed for the two VAWTs and the turbines in them are reasonably simplified. Natural frequency analyses for the SDOF and MDOF models of the two VAWTs are conducted. A beam element model (BEM) of the two VAWTs is created to calculate their natural frequencies and mode shapes and to verify natural frequency results from the SDOF and MDOF models. By using the BEM of the two VAWTs, their amplitude-frequency responses are obtained from harmonic response analysis. To analyze forced vibrations of the two VAWTs, aerodynamic loads on the two VAWTs are obtained from computational fluid dynamics (CFD) simulation. By using solid element models of the two VAWTs, forced transient responses of the two VAWTs are calculated by using the aerodynamic loads from CFD simulation. Steady-state forced response amplitudes of the 1 m-mast hybrid VAWT are 23.8% and 20.5% smaller in X- and Y-directions than those of the 1 m-mast H-type VAWT, respectively. Frequency contents of the aerodynamic loads from CFD simulation are calculated, which confirm that they are periodic, and the power efficiency of the H-type VAWT is about 2.6% higher that of the hybrid VAWT.
APA, Harvard, Vancouver, ISO, and other styles
2

Asim, Taimoor, Dharminder Singh, M. Salman Siddiqui, and Don McGlinchey. "Effect of Stator Blades on the Startup Dynamics of a Vertical Axis Wind Turbine." Energies 15, no. 21 (October 31, 2022): 8135. http://dx.doi.org/10.3390/en15218135.

Full text
Abstract:
Vertical Axis Wind Turbines (VAWTs) are omni-directional, low-cost, low-efficiency wind power extractors. A conventional drag-based VAWT consists of multiple thin rotor blades with a typical peak Tip Speed Ratio (λ) of < 1. Their lower cut-in speed and maintenance cost make them ideal for power generation in urban environments. Numerous studies have been carried out analysing steady operation of VAWTs and quantifying their performance characteristics, however, minimal attention has been paid to their start-up dynamics. There are a few recent studies in which start-up dynamics of lift-based VAWTs have been analysed but such studies for drag-based VAWTs are severely limited. In this study, start-up dynamics of a conventional multi-blade drag-based VAWT have been numerically investigated using a time-dependant Computational Fluid Dynamics (CFD) solver. In order to enhance the start-up characteristics of the drag-based VAWT, a stator has been integrated in the design assembly. The numerical results obtained in this study indicate that an appropriately designed stator can significantly enhance the start-up of a VAWT by directing the flow towards the rotor blades, leading to higher rotational velocity (ω) and λ. With the addition of a stator, the flow fields downstream the VAWT becomes more uniform.
APA, Harvard, Vancouver, ISO, and other styles
3

Mohammed, Gwani, Mamuda Buhari, Umar Muhammed Kangiwa, and John Danyaro. "Design, Fabrication and Performance Evaluation of Hybrid Vertical Axis Wind Turbine." International Journal for Modern Trends in Science and Technology 6, no. 6 (June 28, 2020): 80–86. http://dx.doi.org/10.46501/ijmtst060618.

Full text
Abstract:
Vertical axis wind turbines (VAWT) have attracted a lot of attention recently as an efficient tool in harnessing wind energy; however these types of wind turbine are faced with some challenges which affect their overall performance. The Darrieus rotor has difficulty to self-start by itself while the Savonius rotor has low efficiency. The performance of these turbines can be improved by combining the two VAWTs as one system. This paper presents the design of a hybrid VAWTs turbine. The Hybrid VAWTs combines the Darrieus rotor and the Savonius rotor as a single system to produce a high starting torque and enhanced efficiency. The Savonius rotor is placed at the centre of the three vertical blades of the Darrieus H-rotor to form the hybrid VAWTs. The hybrid VAWT was tested at four different wind speed i.e. V = 4.80 m/s, 4.50 m/s, 4.30 m/s and 3.90 m/s respectively. The performance of the hybrid VAWT was compared with the conventional straight bladed VAWT under similar experimental conditions. The obtained results showed that there is substantial improvement in the self-starting ability and coefficient of power (Cp). At V = 4.80 m/s, the Cp values for hybrid VAWT increased by 92% compared to straight bladed H-rotor VAWT. Similar improvement was also observed at wind speed of V = 4.50 m/s, 4.30 m/s, and 3.90 m/s where the Cp values increases by 71%, 10%, and 67% respectively compared to the straight bladed H-rotor.
APA, Harvard, Vancouver, ISO, and other styles
4

Brunner, C. E., J. Kiefer, and M. Hultmark. "Comparison of dynamic stall on an airfoil undergoing sinusoidal and VAWT-shaped pitch motions." Journal of Physics: Conference Series 2265, no. 3 (May 1, 2022): 032006. http://dx.doi.org/10.1088/1742-6596/2265/3/032006.

Full text
Abstract:
Abstract The aerodynamics of vertical axis wind turbines (VAWTs) are inherently unsteady because the blades experience large angle of attack variations throughout a full turbine revolution. At low tip speed ratios, this can lead to a phenomenon known as dynamic stall. To better characterise the unsteady aerodynamics and represent them in models and simulations, data from studies of individual static or pitching airfoils are often applied to VAWT blades. However, these studies often involve sinusoidally pitching airfoils, whereas the pitching motions experienced by VAWTs are more complex. Here, the pressures and forces on an airfoil undergoing VAWT-shaped pitch motions corresponding to various tip speed ratios are compared to those of a sinusoidally pitching airfoil in order to assess whether a sinusoidal motion represents a reasonable approximation of the motions of a VAWT blade. While the lift development induced by the sinusoidal motion yields good agreement with that induced by the VAWT-shaped motion at the higher tip speed ratios, notable discrepancies exist at the lower tip speed ratios, where the VAWT motion itself deviates more from the sinusoid. Comparison with sinusoidal motions at reduced frequencies corresponding to the upstroke or downstroke of the VAWT-shaped motion yield better agreement in terms of the angle of stall onset.
APA, Harvard, Vancouver, ISO, and other styles
5

Nofirman Firdaus, Bambang Teguh Prasetyo, Hasnida Ab-Samat, Prayudi, Hendri, Wahirom, Heri Suyanto, and Rusjdi Halim. "Wind Energy Potential on A Highrise Building: A Preliminary Study." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 88, no. 3 (November 11, 2021): 20–30. http://dx.doi.org/10.37934/arfmts.88.3.2030.

Full text
Abstract:
Indonesia has an abundant renewable energy source. One of them is wind energy resources. Unfortunately, Indonesia's wind energy resource is not fully utilized, especially for application in high-rise buildings. The paper investigates the potential of energy production from the horizontal-axis wind turbine (HAWT) and the vertical-axis wind turbine (VAWT) on the rooftop of a university building in Indonesia. The wind speed data were measured on the rooftop of the building for seven months. The data was analyzed using Weibull distribution. Based on the probability density function of the Weibull distribution, the potential energy production was calculated using the power curves from the manufacturer. Comparing energy production between HAWTs and VAWTs has shown that VAWTs can produce more energy than HAWTs. Using six turbines, VAWTs can produce 48,476 kWh. On the other hand, with four turbines, HAWTs can produce 41,729 kWh. The reason is that VAWT requires shorter distance requirements for inter-turbine and between rows. Therefore, VAWT can use more turbines than HAWT in the limited area. In conclusion, VAWT for high-rise buildings is more preferred because VAWT can generate more energy. Further study should investigate the optimal configuration with varying the wind direction and quantifying the wake effect on power output.
APA, Harvard, Vancouver, ISO, and other styles
6

Mohan Kumar, Palanisamy, Krishnamoorthi Sivalingam, Teik-Cheng Lim, Seeram Ramakrishna, and He Wei. "Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Large Wind Turbines." Clean Technologies 1, no. 1 (August 7, 2019): 205–23. http://dx.doi.org/10.3390/cleantechnol1010014.

Full text
Abstract:
The objective of the current review is to present the development of a large vertical axis wind turbine (VAWT) since its naissance to its current applications. The turbines are critically reviewed in terms of performance, blade configuration, tower design, and mode of failure. The early VAWTs mostly failed due to metal fatigue since the composites were not developed. Revisiting those configurations could yield insight into the future development of VAWT. The challenges faced by horizontal axis wind turbine (HAWT), especially in the megawatt capacity, renewed interest in large scale VAWT. VAWT provides a solution for some of the immediate challenges faced by HAWT in the offshore environment in terms of reliability, maintenance, and cost. The current rate of research and development on VAWT could lead to potential and economical alternatives for HAWT. The current summary on VAWT is envisioned to be an information hub about the growth of the Darrieus turbine from the kW capacity to megawatt scale.
APA, Harvard, Vancouver, ISO, and other styles
7

MacPhee, David, and Asfaw Beyene. "Recent Advances in Rotor Design of Vertical Axis Wind Turbines." Wind Engineering 36, no. 6 (December 2012): 647–65. http://dx.doi.org/10.1260/0309-524x.36.6.647.

Full text
Abstract:
The following work represents the most recent advances in design and testing of vertical axis wind turbines (VAWT) rotors. VAWTs have received much attention as of late due to proposed advantages in small scale and off grid wind power generation. Thus, many recent works have surfaced involving analysis, design and optimization of VAWT rotors in order to more efficiently convert wind energy to electricity or other readily usable means. This paper is a collection of most of the recent literature works involving VAWT rotor design and testing, the majority of which published after 2005. We discuss research in the designing of various lift based rotors as well as some drag based rotors, hybrids, and various others. The recent work in this area suggests VAWT capacity could dramatically increase in the near future, and play a vital role in obtaining cleaner, more sustainable energy when global energy demand is increasing at an unprecedented rate. HIGHLIGHTS A review of various works involving rotor design and testing of both lift and drag Vertical Axis Wind Turbines (VAWTs) is presented; Benefits of vertical axis wind turbines in small scale and off grid wind power generation is summarized; Much of the recent work, published after 2005, has been directed towards analyzing, designing, and optimizing rotor shapes. The body of this recent work suggests that research on VAWT rotor design continues to flourish and could make VAWTs a viable competitor to more traditional Horizontal Axis Wind Turbines (HAWTs) worldwide.
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Qi Kun. "Numerical Investigation on Aerodynamic Performance for Guiding VAWT with Combined Blades." Applied Mechanics and Materials 34-35 (October 2010): 376–82. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.376.

Full text
Abstract:
In this paper, the reason was analyzed that the aerodynamic efficiency of the traditional vertical axis wind turbine (VAWT) was always low, and a new type of VAWT—Guiding VAWT was introduced. On that basis, a new blade shape called as combined blade for Guiding VAWT was proposed and numerical investigation was complemented on its aerodynamic performance by CFD (Computational Fluid Dynamics) technique. This Guiding VAWT includes two components: guiding impeller and rotating impeller, which are both combined blade in shape. The guiding blade is combined by three sections: inlet radial section, middle arc section and outlet linear section. The wind blade is combined by two sections, inlet arc section and outlet linear section. The combined guiding blade may not only avoid the wind impeller from the direct impact by the coming flow on its convex surface of the blade so as to decrease the drag torque but also improve the effective impact by the coming flow on the concave surface of the blade, both of which contribute the enhancement for the driving torque of the wind turbine. Results indicate: This new type of Guiding VAWT with combined blade has a wider operating range, higher aerodynamic efficiency than the traditional VAWTs. And more, this paper introduced the airfoil blade into this new type of VAWT and numerically validated that even though the flow inside VAWT was a large separated flow with variable attack angles, the aerodynamic advantage of the airfoil blade could still be shown to some extent, which hoped to further enhance the aerodynamic efficiency of the VAWT. Additionally, this new type of VAWT has a two dimensional structure for convenient manufacture, which has the latent energy to be popularized.
APA, Harvard, Vancouver, ISO, and other styles
9

Korprasertsak, Natapol, and Thananchai Leephakpreeda. "Optimal Design of Wind Boosters for Low Speed Vertical Axis Wind Turbines." Applied Mechanics and Materials 798 (October 2015): 195–99. http://dx.doi.org/10.4028/www.scientific.net/amm.798.195.

Full text
Abstract:
Although Vertical Axis Wind Turbines (VAWTs) are designed for performing mechanical works acceptably at medium wind speed, Standalone VAWTs are still unable to generate mechanical power satisfactorily for best practice at low speed wind. This study presents optimal design of wind booster, by utilizing Computational Fluid Dynamics (CFD). A wind booster is proposed to be implemented with a VAWT in order to not only harvest energy with low availability at low wind speed but also enhance performance of a VAWT at higher wind speed. In CFD-based experiments, guiding and throttling effects of the wind booster are able to increase mechanical power of a VAWT. Optimal alternatives of number and leading angle of guide vanes are determined by maximizing the coefficient of power from the alternating direction method as an optimization technique. The VAWT coupled with the optimal wind booster, which consists of 8 guide vanes and leading angle of 55o, is cable of producing mechanical power higher up to the coefficient of power of 4.8 % than the original design.
APA, Harvard, Vancouver, ISO, and other styles
10

Tan Chun Khai, Ahmad Faiz Mohammad, Ahmad Fazlizan, Sheikh Ahmad Zaki, and Farah Liana Mohd Redzuan. "Numerical Investigation of the Power Performance of the Vertical-Axis Wind Turbine with Endplates." CFD Letters 14, no. 6 (June 26, 2022): 90–101. http://dx.doi.org/10.37934/cfdl.14.6.90101.

Full text
Abstract:
An H-rotor vertical axis wind turbine (VAWTs) can operate independently in any wind direction, making it aerodynamically efficient and suitable to harness wind energy in low wind speed areas. The aerodynamic efficiency of VAWTs is highly dependent on the blade geometry, especially the blade tip. Tip vortices produced at the blade tips can negatively affect the VAWT’s aerodynamic efficiency. Adding endplates to the blade tips can minimize the effects of tip vortices on VAWTs. In this paper, several endplate designs are used to evaluate the effectiveness in improving the power coefficient, Cp of a VAWT at three different tip speed ratios (TSRs) using three-dimensional computational fluid dynamics (3D CFD) simulation. The power coefficients of VAWTs with endplates are compared with the baseline model with the same geometrical parameters where the baseline VAWT model is based on the experimental model from the literature. Since the focus of this study is on the blade tip design, a simplified 3D VAWT model is used where the supporting shaft and arms of the VAWT are excluded to reduce the needed computational capacity. Among the various endplate designs used in this study, the semi-circular inward endplate (ED3) with a diameter equivalent to 1.2 blade chord length showed the best improvement in the Cp which is by 7.45%, and 5.79% for at the TSRs of 2.19 and 2.58, respectively. The pressure difference on both sides of the blade was also examined. The results revealed that the endplate can prevent the flow from bypassing the blade tip, hence, preventing the occurrence of tip vortices while improving the aerodynamic efficiency near the blade tip, ultimately, improving the overall Cp of a VAWT.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "VAWT"

1

Hikkaduwa, Vithanage Ajith. "DESIGN AND PERFORMANCE ANALYSIS OF PITCHED-PLATE VERTICAL AXIS WIND TURBINE FOR DOMESTIC POWER GENERATION." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-17428.

Full text
Abstract:
Wind energy is identified a promising energy resource in Sri Lanka. Therefore, it is important to use proper technologies for efficient energy capturing in order to minimize cost of energy. Small scale wind turbines are usually installed in constricted places (particularly in urban areas) where wind flow is turbulent and difficult to predict. Savonious type vertical axis wind turbines are important due to several reasons such as good response to turbulent winds, high initial torque, low cost, low noise, less maintenance.In this study, a modified flat plate type Savonius wind rotor was proposed to cost effectively harness wind energy in constricted places. Generally, vertical axis wind turbines (VAWT) are less efficient than horizontal axis wind turbines, one reason behind this issue is wind force difference between the 2 sides of the axis is small and due to this reason torque is small and power generation capacity is less.A prototype of the proposed VAWT was fabricated and the performance was determined by acquiring experimental data. Artificial wind blow which was generated by a huge fan was used to measure rotational speed and torque characteristics at varying wind speeds. Data were collected with 1-second sampling time and a data acquisition system was developed under this study. In the proposed design one side of the turbine blades are facing the wind direction in order to capture maximum force while other side is edging the blades to have minimum opposite torque. With this concept it is expected to maximize the torque of the axis and generate more power. A sort of a passive pitch mechanism is therefore utilized in order to save energy and simplify the system. Turbine blades are simple flat plates and it eliminates usage of complex aero foils. Due to the simplicity of this design it would be possible to use this turbine for domestic electricity generation at affordable costs.Nowadays, net metering systems are being promoted in Sri Lanka and it would be beneficial to introduce low cost VAWT which operates at low winds as well as turbulent wind conditions. Based on typical household hourly load profile, viability of proposed vertical axis wind turbine was evaluated by considering rural and urban wind regimes in Sri Lanka. The costs of wind energy at two selected locations were determined in the context of net metering.
APA, Harvard, Vancouver, ISO, and other styles
2

Taylor, Katharin C. "Method for VAWT placement on a complex building structure." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34752.

Full text
Abstract:
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted.
Approved for public release; distribution is unlimited
This thesis is part of a larger project that will demonstrate the feasibility of powering a commercially sized 7.5-ton cooling system. Excess cooling will be stored thermally using ice. This system has the potential to be used in military bases to reduce energy costs and fossil fuel consumption. A scaled down version would be suitable for data centers and forward operating bases where the transport of fuel can be costly and dangerous. The system will be built and operated at the Turbopropulsion Laboratory (TPL) of Naval Postgraduate School. This thesis concentrates on the choice and location of wind turbines used to power the cooling system. A simulation of Building 216, which is the planned site of the cooling system, was performed. A wind flow analysis found that optimum placement of the wind turbines is at the front of the south end of the building. The method for placing the wind turbines is outlined and applicable to other structures. Vertical Axis Wind Turbines (VAWTS) were found to be the most suitable for site location. A transient analysis of the VAWTS was necessary to accurately simulate their performance. This supported the selection of a three-bladed helical VAWT design. Further simulations of wind turbine separation showed some beneficial effects of close spacing.
APA, Harvard, Vancouver, ISO, and other styles
3

Wahlberg, Nils. "Konstruktion av statorstomme för synkrongenerator : Förslag på design av statorstomme för användning i vertikalaxlade vindkraftverk." Thesis, Uppsala universitet, Elektricitetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-207778.

Full text
Abstract:
This thesis describes a conceptual design of a support frame for a synchronousgenerator used in a vertical axis wind power plant. In this system the generator isplaced on ground level. The thesis also considers the design of housing for thesupport frame and generator. The concept presented in this report is based on anearlier design. Besides geometric design, simplified simulations has been run in orderto optimize some of the parts included in the construction considering naturalfrequencies and structural strength. The result is presented as CAD-models andan assembly drawing.
APA, Harvard, Vancouver, ISO, and other styles
4

Zhao, Jiaming. "Experimental Study of Effects of Leading-Edge Structures on the Dynamic Stall of a Vertical Axis Wind Turbine Airfoil." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/32053.

Full text
Abstract:
Vertical axis wind turbine, developed as one of the main methods to utilize the wind energy, has a promising future; however, the major issue to limit its performance is the uneven loading on the blade during operation. Flow control mechanisms have been employed in the aerodynamic field to improve the performance of airfoils. In this study, two types of leading-edge structures, including flexible leading-edge and leading-edge roughness, are experimentally investigated to analyze their effects on altering the aerodynamic characteristics of NACA 0018 airfoil under steady flow condition and dynamic pitching condition. Current experimental results indicate that 1) during the steady flow condition, both of leading-edge structures contribute to the delay of the static stall; 2) for the dynamic pitching process, the leading-edge structures either delayed the dynamic stall angle or increased the area of the coefficient of pressure loop as a function of angle of attack.
APA, Harvard, Vancouver, ISO, and other styles
5

Almohammadi, Khaled Mohammad. "Optimization of a CFD based design of a straight blade vertical axis wind turbine (SB-VAWT)." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7021/.

Full text
Abstract:
Enhancing the extraction of the wind energy in urban regions using micro and small wind turbines becomes a necessity with the increasing power consumption. The focus of this thesis is to optimize micro and small SB-VAWT performance by analysing CFD techniques, several modelling characteristics and design parameters where the performance is measured by the power coefficient. In this thesis, the SB-VAWT is optimized by employing sophisticated optimization techniques, namely such as the GA and the NLPQL, which are employed on response surfaces created from several design sampling methods. The optimization is based on three parameters, namely, camber, thickness and chord. A novel airfoil geometry has been introduced. The new airfoil geometry increases the power coefficient by about 42% at the optimized tip speed ratio and increases the peak of the turbine power coefficient by 4% at a low tip speed ratio. However, it was necessary to assess the computational process by examining the mesh and the computational method in order to ensure that the optimized design of the SB-VAWT is only resulting from the optimization process. Therefore, several physical phenomena have been investigate including the dynamic stall, laminar-turbulent transition and laminar bubbles. Also, several computational techniques and schemes have been critically analysed. Further, several mesh independency techniques have been implemented and it was found that the fitting method may be suitable for SB-VAWTs due to the presence of oscillations in the convergence of the power coefficient which may be caused by the presence of dynamic stall, laminar-turbulent transition and laminar bubbles. The physics of these flow conditions are only captured when the transitional model is employed. The optimization of the SB-VAWT in this thesis is based on a 2D model. It was found that the 2D model produce a results similar to the 3D model at mid span of the turbine blade. Therefore, the 2D model of the turbine sufficiently represents the flow physics around the blades qualitatively, and thus the 2D model is employed for the optimization of the SB-VAWT.
APA, Harvard, Vancouver, ISO, and other styles
6

Pearson, Charlie. "Vertical axis wind turbine acoustics." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245256.

Full text
Abstract:
Increasing awareness of the issues of climate change and sustainable energy use has led to growing levels of interest in small-scale, decentralised power generation. Small-scale wind power has seen significant growth in the last ten years, partly due to the political support for renewable energy and the introduction of Feed In Tariffs, which pay home owners for generating their own electricity. Due to their ability to respond quickly to changing wind conditions, small-scale vertical axis wind turbines (VAWTs) have been proposed as an efficient solution for deployment in built up areas, where the wind is more gusty in nature. If VAWTs are erected in built up areas they will be inherently close to people; consequently, public acceptance of the turbines is essential. One common obstacle to the installation of wind turbines is noise annoyance, so it is important to make the VAWT rotors as quiet as possible. To date, very little work has been undertaken to investigate the sources of noise on VAWTs. The primary aim of this study was therefore to gather experimental data of the noise from various VAWT rotor configurations, for a range of operating conditions. Experimental measurements were carried out using the phased acoustic array in the closed section Markham wind tunnel at Cambridge University Engineering Department. Beamforming was used in conjunction with analysis of the measured sound spectra in order to locate and identify the noise sources on the VAWT rotors. Initial comparisons of the spectra from the model rotor and a full-scale rotor showed good qualitative agreement, suggesting that the conclusions from the experiments would be transferable to real VAWT rotors. One clear feature observed in both sets of spectra was a broadband peak around 1-2kHz, which spectral scaling methods demonstrated was due to laminar boundary layer tonal noise. Application of boundary layer trips to the inner surfaces of the blades on the model rotor was found to eliminate this noise source, and reduced the amplitude of the spectra by up to 10dB in the region of the broadband peak. This method could easily be applied to a full-scale rotor and should result in measurable noise reductions. At low tip speed ratios (TSR) the blades on a VAWT experience dynamic stall and it was found that this led to significant noise radiation from the upstream half of the rotor. As the TSR was increased the dominant source was seen to move to the downstream half of the rotor; this noise was thought to be due to the interaction of the blades in the downstream half of the rotor with the wake from the blades in the upstream half. It was suggested that blade wake interaction is the dominant noise source in the typical range of peak performance for the full-scale QR5 rotor. Different solidity rotors were investigated by using 2-, 3- and 4-bladed rotors and it was found that increasing the solidity had a similar effect to increasing the TSR. This is due to the fact that the induction factor, which governs the deflection of the flow through the rotor, is a function of both the rotor solidity and the TSR. With a large body of experimental data for validation, it was possible to investigate computational noise prediction methods. A harmonic model was developed that aimed to predict the sound radiated by periodic fluctuations in the blade loads. This model was shown to agree with similar models derived by other authors, but to make accurate predictions very high resolution input data was required. Since such high resolution blade loading data is unlikely to be available, and due to the dominance of stochastic sources, the harmonic model was not an especially useful predictive tool. However, it was used to investigate the importance of the near-field components of the sound radiated by the wind tunnel model to the acoustic array. It was shown that the near-field terms were significant over a wide range of frequencies, and the total spectrum was always greater than that of the far-field component. This implied that the noise levels measured by the acoustic array represented an upper bound on the sound radiated to the far-field, and hence that the latter would also be dominated by stochastic components. An alternative application of the harmonic model, which attempted to determine the blade loading harmonics from the harmonics in the sound field was proposed. This inversion method utilised a novel convex optimisation technique that was found to generate good solutions in the simulated test cases, even in the presence of significant random noise. The method was found to be insensitive at low frequencies, which made it ineffective for inverting the real microphone data, although this was shown to be at least partly due to the limitations imposed by the array size. In addition to the harmonic models, an empirical noise prediction method using the spectral scaling laws derived by \citet*{Brooks_1989} was trialled, and was found to be capable of making predictions that were in agreement with the measured data. The model was shown to be sensitive to the exact choice of turbulence parameters used and was also found to require good quality aerodynamic data to make accurate noise predictions. If such data were available however, it is expected that this empirical model would be able to make useful predictions of the noise radiated by a VAWT rotor.
APA, Harvard, Vancouver, ISO, and other styles
7

Bülow, Fredrik. "A Generator Perspective on Vertical Axis Wind Turbines." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-197855.

Full text
Abstract:
The wind energy conversion system considered in this thesis is based on a vertical axis wind turbine with a cable wound direct drive PM generator. Diode rectifiers are used to connect several such units to a single DC-bus and a single inverter controls the power flow from the DC-bus to a utility grid. This work considers the described system from a generator perspective i.e. the turbine is primarily seen as a torque and the inverter is seen as a controlled load. A 12 kW VAWT prototype with a single turbine has been constructed within the project. The power coefficient of this turbine has been measured when the turbine is operated at various tip speed ratios. This measurement determines both how much energy the turbine can convert in a given wind and at what speed the turbine should be operated in order to maximise the energy capture. The turbine torque variation during the revolution of the turbine has also been studied. A PM generator prototype has been constructed in order to study power loss in the stator core at low electrical frequencies. Heat exchange between the stator and the air-gap between the stator and the rotor has been studied. Heat exchange between the stator and the air-gap is increased by turbulence caused by the rotor. The generator was also used in a demonstration of a DC-grid where two diode rectified PM generators supplied power to a single DC load.  An initial study of an inverter suitable for grid connection of the 12 kW PM generator has been performed. Several turbine control strategies are evaluated in simulations. The control strategies only require the parameter "turbine speed" to determine the optimal system load.
APA, Harvard, Vancouver, ISO, and other styles
8

Sjökvist, Stefan. "Demagnetization Studies on Permanent Magnets : Comparing FEM Simulations with Experiments." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236301.

Full text
Abstract:
In a world where money often is the main controlling factor, everything that can be tends to be more and more optimized. Regarding electrical machines, developers have always had the goal to make them better. The latest trend is to make machines as efficient as possible, which calls for accurate simulation models where different designs can be tested and evaluated. The finite element method is probably the most popular approach since it makes it possible to, in an easy and accurate way, get numerical solutions to a variety of physics problems with complex geometries and non-linear materials. This licentiate thesis includes two different projects in which finite element methods have had a central roll. In the first project, the goal was to develop a simulation model to be able to predict demagnetization of permanent magnets. It is of great importance to be able to predict if a permanent magnet will be demagnetized or not in a certain situation. In the worst case, the permanent magnets will be completely destroyed and the machine will be completely useless. However, it is more probable that the permanent magnets will not be completely destroyed and that the machine still will be functional but not as good as before. In a time where money is more important than ever, the utilization has to be as high as possible. In this study the demagnetization risk for different rotor geometries in a 12 kW direct driven permanent magnet synchronous generator was studied with a proprietary finite element method simulation model. The demagnetization study of the different rotor geometries and magnet grades showed that here is no risk for the permanent magnets in the rotor as it is designed today to be demagnetized. The project also included experimental verification of the simulation model. The simulation model was compared with experiments and the results showed good agreement. The second project treated the redesign of the rotor in the generator previously mentioned. The goal was to redesign the surface mounted NdFeB rotor to use a field concentrating design with ferrite permanent magnets instead. The motivation was that the price on NdFeB magnets has fluctuated a lot the last few years as well as to see if it was physically possible to fit a ferrite rotor in the same space as the NdFeB rotor. A new rotor design with ferrite permanent magnets was presented together with an electromagnetic and a mechanical design.
APA, Harvard, Vancouver, ISO, and other styles
9

Bah, Elhadji Alpha Amadou. "Numerical investigation on the use of multi-element blades in vertical-axis wind turbines." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53501.

Full text
Abstract:
The interest in sustainable forms of energy is being driven by the anticipated scarcity of traditional fossil fuels over the coming decades. There is also a growing concern about the effects of fossil fuel emissions on human health and the environment. Many sources of renewable energy are being researched and implemented for power production. In particular, wind power generation by horizontal- and vertical-axis wind turbines is very popular. Vertical-axis wind turbines (VAWTs) have a relative construction simplicity compared to horizontal-axis wind turbines (HAWTs). However, VAWTs present specific challenges that may hinder their performance. For instance, they are strongly affected by dynamic stall. A significant part of the kinetic energy contained in the oncoming wind is lost in swirl and vortices. As a result, VAWTs have lower power production compared to HAWTs. First, the present work is aimed at the study of the aerodynamics of straight-bladed VAWTs (SB-VAWTs). Empirical calculations are conducted in a preliminary work. Then a two-dimensional double multiple streamtube (DMST) approach supported by a two-dimensional numerical study is implemented. The dynamic stall and aerodynamic performance of the rotor are investigated. A VAWT-fitted dynamic stall model is implemented. Computational fluid dynamics (CFD) simulations are conducted to serve as reference for the DMST calculations. This three-pronged approach allows us to efficiently explore multiple configurations. The dynamic stall phenomenon is identified as a primary cause of performance loss. The results in this section validate the DMST model as a good replacement for CFD analysis in early phase design provided that a good dynamic stall model is used. After having identify the primary cause of performance loss, the goal is to investigate the use to dual-element blades for alleviating the effect of dynamic stall, thereby improving the performance of the rotor. The desirable airfoil characteristics are defined and a parametric analysis conducted. In the present study the parameters consists of the size of the blade elements, the space between them, and their relative orientation. The performance of the rotor is calculated and compared to the baseline. The results highlight the preeminence of the two-element configuration over the single-element provided that the adequate parametric study is conducted beforehand. A performance enhancement is obtained over a large range of tip speed ratios. The starting characteristics and the operation stability are also improved. Finally, an economic analysis is conducted to determine the cost of energy and thus the financial viability of such a project. The Great Coast of Senegal is selected as site of operation. The energy need and sources of this region are presented along with its wind energy potential. The cost evaluation shows the economic viability by comparing the cost of energy to the current energy market prices.
APA, Harvard, Vancouver, ISO, and other styles
10

Du, Yingkang. "An Orthogonal Savonius-type Wind Turbine: Design and Experiments." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459510710.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "VAWT"

1

Anand, Satyapal. Vaqt lā vaqt: Naẓmen̲. Risṭan, Varjinyā, Yū. Es. Ae: Satyah Pāl Ānand, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Batt, Razia. Vaqt vaqt ki bat. Lahore: Sang e Mil, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nagata, Linda. Vast. New York: Bantam Books, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Nagata, Linda. Vast. London: Victor Gollancz, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Nagata, Linda. Vast. New York: Bantam Books, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Malik, Karīm. Dar-i iḥsās pah dastak: Kālamon̲ kā majmūʻah. Multān: Bīkan Buks, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Koenegracht, Frank. Alles valt. Amsterdam: Bezige Bij, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Amjad, Amjad Islām. Vaqt: Ḍrāme. Lāhaur: Sang-i Mīl Pablīkeshanz, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Moya, Alvaro de. Vapt vupt. São Paulo, SP, Brasil: Clemente e Gramani Editora e Comunicações, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sädaqätoğlu, Samir. İtän vaxt. Bakı: Adiloğlu, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "VAWT"

1

Lecheb, S., A. Chellil, H. Mechakra, B. Safi, Y. Beggah, and Y. Lounici. "Material Fracture of Dynamic VAWT Blade." In Proceedings of the Third International Symposium on Materials and Sustainable Development, 189–96. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89707-3_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Carbó Molina, Andreu, Sander Van de Maele, Gianni Bartoli, Tim De Troyer, and Mark Runacres. "Experimental Characterization of VAWT Airfoils Under Turbulent Flows." In Wind Energy Exploitation in Urban Environment, 21–38. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13531-7_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Dumitrescu, Horia, Alexandru Dumitrache, Ion Malael, and Radu Bogateanu. "The Standard and Counter-Rotating VAWT Performances with LES." In Recent Advances in CFD for Wind and Tidal Offshore Turbines, 117–26. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11887-7_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Zhang, Qian, Haifeng Chen, and Binbin Wang. "Modeling and Simulation of Two-Leaf Semi-rotary VAWT." In Lecture Notes in Computer Science, 389–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15621-2_43.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Schito, P., I. Bayati, M. Belloli, L. Bernini, V. Dossena, and A. Zasso. "Numerical Wind Tunnel Tests of an Open Data IPC-VAWT." In Wind Energy Exploitation in Urban Environment, 113–22. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74944-0_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Menet, J. L. "Aerodynamic Behaviour of a New Type of Slow-Running VAWT." In Wind Energy, 235–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-33866-6_43.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Miliket, Temesgen Abriham, Mesfin Belayneh Ageze, and Muluken Temesgen Tigabu. "Numerical Investigations of Variable Pitch Straight-Bladed H-Darrieus VAWT." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 565–83. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93712-6_38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mahboub, Nour El Houda, Mama Bouchaour, and Laarej Merad. "Comparative Study of Different Aerodynamic Profiles for HAWT and VAWT." In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (4th Edition), 153–55. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51904-8_36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Bourguet, Rémi, Guillaume Martinat, Gilles Harran, and Marianna Braza. "Aerodynamic Multi-Criteria Shape Optimization of VAWT Blade Profile by Viscous Approach." In Wind Energy, 215–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-33866-6_39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Aher, Shivaji Suryabhan, and Netra Pal Singh. "Effect of Various Parameters on Aerodynamic Performance of Savonius VAWT: A Review." In Smart Technologies for Energy, Environment and Sustainable Development, Vol 1, 837–47. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6875-3_67.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "VAWT"

1

J, Shalini Priya, Ambika A, Loganathan V, Vishaal S, Jaswanth M, and Pragalathan A. "Integrated Solar- VAWT Energy System." In 2024 International Conference on Power, Energy, Control and Transmission Systems (ICPECTS), 1–5. IEEE, 2024. https://doi.org/10.1109/icpects62210.2024.10780096.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Khedekar, Lokesh, Bhumika Divate, Krishna Endela, Aditi Dyavanpalli, Atharv Ekbote, and Digvijay Bote. "Strategies for VAWT Optimisation in Highway Environments." In 2024 Second International Conference on Inventive Computing and Informatics (ICICI), 243–48. IEEE, 2024. http://dx.doi.org/10.1109/icici62254.2024.00048.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Richartz, Leon E., Huijie Li, and Yi Gu. "A New Super-Productive VAWT." In 2009 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2009. http://dx.doi.org/10.1109/appeec.2009.4918081.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Manoj, M. Sowmiya, Chandra Sekar.V, Dinesh V, and Sathyan P. "Wind Energy Into Power Using VAWT." In 2023 3rd International Conference on Pervasive Computing and Social Networking (ICPCSN). IEEE, 2023. http://dx.doi.org/10.1109/icpcsn58827.2023.00257.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Thanigaivelan, V., S. Prithvy, Kumar Balachander, M. Santhanakrishnan, and S. Keshav. "IOT Based Development of Helical VAWT." In 2022 International Conference on Advances in Computing, Communication and Applied Informatics (ACCAI). IEEE, 2022. http://dx.doi.org/10.1109/accai53970.2022.9752605.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Naik, Kabita, and Niranjan Sahoo. "Dimple Shape Effect on the Aerodynamic Performance of H-Rotor Darrieus Vertical Axis Wind Turbine." In ASME 2021 Gas Turbine India Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gtindia2021-76017.

Full text
Abstract:
Abstract Nowadays, the vertical axis wind turbines (VAWTs) have gained significant attention among the small wind turbine (WT) due to their omnidirectional ability, low costs, low noise, and robustness, mainly for urban and off-shore applications. The H-rotor Darrieus is one of the class of VAWT that is mostly suitable for low-speed wind and low tip speed ratio (TSR) conditions. These VAWTs have relatively lesser performance than horizontal axis wind turbines (HAWTs). Therefore, to improve the performance of the H-rotor Darrieus VAWT, a dimple/cavity of different shapes is created into the surface of the blade airfoil as a power augmentation technique. The current study presents several two-dimensional numerical simulations on the H-rotor Darrieus VAWT in the turbulent flow. The performance of the VAWT has been examined through ANSYS Fluent solver with different turbulence models, and it is found that the Shear stress transport (SST) k–ω turbulence model shows better results. The study primarily focuses on the effect of the dimple location, diameter and shape to enhance the aerodynamic performance of the H-rotor Darrieus VAWT. It is found that the rotor performance is increased by about 13% with a quadral/rectangular dimple in comparison to without dimple. Further, with the inclusion of a dimple on the rotor blade airfoil, its performance is not only enhanced but also able to maintain it for a broad range of TSR. Thus, the present study suggests the implication of a dimple/cavity to be very promising in improving H-rotor Darrieus VAWT.
APA, Harvard, Vancouver, ISO, and other styles
7

Bah, Elhadji A. A., Lakshmi N. Sankar, and Jechiel I. Jagoda. "Numerical Investigations on the Use of Multi-Element Airfoils for Vertical Axis Wind Turbine Configurations." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3505.

Full text
Abstract:
Vertical axis wind turbines (VAWT) have a relatively simple, rugged construction compared to HAWTs. However, vertical-axis wind turbines have numerous challenges that may hinder their performance. For instance they are strongly affected by dynamic stall at low tip speed ratios. A significant part of the kinetic energy contained in the oncoming wind is lost in swirl and vortices. As a result, VAWTs have a lower power production and efficiency compared to HAWTs. In an effort to alleviate the adverse effects of dynamic stall phenomena, the present study explores the use of two-element airfoils. A comparative study of single element and dual element VAWT configurations for representative VAWT turbines is given. The benefits of dual-element configurations are analyzed through a detailed flow visualization study of the single and two-element VAWT configurations at various azimuthal locations for a representative tip speed ratio. Analysis of these qualitative phenomena is complemented by a discussion on quantitative data for torque, surface pressure distributions, and airloads.
APA, Harvard, Vancouver, ISO, and other styles
8

Araya, Daniel, and John Dabiri. "Poster: VAWT in a falling soap film." In 67th Annual Meeting of the APS Division of Fluid Dynamics. American Physical Society, 2014. http://dx.doi.org/10.1103/aps.dfd.2014.gfm.p0007.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Belabes, Belkacem, and Marius Paraschivoiu. "3D Numerical Study Of Hill Mounted VAWT." In 2018 Canadian Society for Mechanical Engineering (CSME) International Congress. York University Libraries, 2018. http://dx.doi.org/10.25071/10315/35326.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Safe, A. A., Saad Kashem, M. Moniruzzaman, and M. T. Islam. "Design, fabrication & analysis of twisted blade vertical axis wind turbine (VAWT) and a simple alternator for VAWT." In 2014 9th International Forum on Strategic Technology (IFOST). IEEE, 2014. http://dx.doi.org/10.1109/ifost.2014.6991127.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "VAWT"

1

Ashwill, Thomas D., Herbert J. Sutherland, and Dale E. Berg. A retrospective of VAWT technology. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1035336.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Homicz, G. F. Numerical simulation of VAWT stochastic aerodynamic loads produced by atmospheric turbauence: VAWT-SAL code. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/5177561.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mallick, Kaushik, Don Radford, Nate Bachman, David Snowberg, Michael Stewart, and W. Scott Carron. Vertical Axis Wind Turbine (VAWT) with Thermoplastic Composite Blades. Office of Scientific and Technical Information (OSTI), November 2019. http://dx.doi.org/10.2172/1650138.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liu, H. T., J. W. Buck, A. C. Germain, M. E. Hinchee, T. S. Solt, G. M. LeRoy, and R. A. Srnsky. Field investigation of a wake structure downwind of a VAWT in a windfarm array. Office of Scientific and Technical Information (OSTI), October 1987. http://dx.doi.org/10.2172/7105122.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Liu, H. T., J. W. Buck, A. C. Germain, M. E. Hinchee, T. S. Solt, G. M. LeRoy, and R. A. Srnsky. Field investigation of a wake structure downwind of a VAWT in a windfarm array. Office of Scientific and Technical Information (OSTI), October 1987. http://dx.doi.org/10.2172/10183213.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Peck, John C. VAST - Voice Assisted Sewing Technology. Fort Belvoir, VA: Defense Technical Information Center, April 1995. http://dx.doi.org/10.21236/ada305446.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Adam, Stuart. Protecting VAT revenues. The IFS, June 2013. http://dx.doi.org/10.1920/ps.ifs.2024.0816.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Crawford, Ian, Stephen Smith, and Michael Keen. VAT and Excises. The IFS, April 2007. http://dx.doi.org/10.1920/ps.ifs.2024.1304.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Smith, Stephen. VAT and excises. The IFS, August 2007. http://dx.doi.org/10.1920/ps.ifs.2024.0128.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dickson, Ian, and David White. Commentary: VAT and excises. The IFS, April 2007. http://dx.doi.org/10.1920/ps.ifs.2024.1158.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'VAWT' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography