Relevant bibliographies by topics / Grid impeller

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Grid impeller'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Grid impeller"

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Asuaje, Miguel, Farid Bakir, Smaïne Kouidri, Frank Kenyery, and Robert Rey. "Numerical Modelization of the Flow in Centrifugal Pump: Volute Influence in Velocity and Pressure Fields." International Journal of Rotating Machinery 2005, no. 3 (2005): 244–55. http://dx.doi.org/10.1155/ijrm.2005.244.

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A 3D-CFD simulation of the impeller and volute of a centrifugal pump has been performed using CFX codes. The pump has a specific speed of 32 (metric units) and an outside impeller diameter of 400 mm. First, a 3D flow simulation for the impeller with a structured grid is presented. A sensitivity analysis regarding grid quality and turbulence models were also performed. The final impeller model obtained was used for a 3D quasi-unsteady flow simulation of the impeller-volute stage. A procedure for designing the volute, the nonstructured grid generation in the volute, and the interface flow passag
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Wu, Wei Min, and Yuan Jun Dai. "Numerical Research on the Change Regularity of S Series Airfoil Tip Vortex." Applied Mechanics and Materials 401-403 (September 2013): 379–82. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.379.

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This paper take the impeller of S series airfoil for instance, in view of the complex flow field which is in the condition for the optimum attack angle of design wind velocity with tip vortex, presents a new generating strategy of grid based on controlling gradient method which takes the non-uniform tetrahedral grid with gradient gradual change in the near blade wall flow field. The transition layer grid which is in the development from body-fitted field to the middle of the domain having relatively high density of grid contrast with the far flow field can well capture the size and location of
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Abdullah, Bestoon, Vadim Varsegov, and Adolf Limansky. "CENTRIFUGAL COMPRESSOR HEAD CHARACTERISTIC OF A MICRO TURBOJET ENGINE BASED ON NUMERICAL SIMULATION." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 62 (2020): 5–11. http://dx.doi.org/10.15593/2224-9982/2020.62.01.

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Shown the possibility of using the standard ANSYS CFX hydrodynamic software package for calculating the gasdynamic characteristics of the centrifugal compressor impeller of micro turbojet engines with different options for profiling blades which based on physical and numerical modeling. Presented a methodology for designing the impeller of a centrifugal compressor based on solving the inverse problem of gas dynamics. As a result of a numerical study, the head coefficient of various forms of the impeller was obtained and presented the dependences of the head coefficient and efficiency on the bl
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Miner, Steven M. "3-D Viscous Flow Analysis of a Mixed Flow Pump Impeller." International Journal of Rotating Machinery 7, no. 1 (2001): 53–63. http://dx.doi.org/10.1155/s1023621x01000057.

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This paper presents the results of a study using a coarse grid to analyze the flow in the impeller of a mixed flow pump. A commercial computational fluid dynamics code (FLOTRAN) is used to solve the 3-D Reynolds Averaged Navier Stokes equations in a rotating cylindrical coordinate system. The standardk-εturbulence model is used. The mesh for this study uses 26,000 nodes and the model is run on a SPARCstation 20. This is in contrast to typical analyses using in excess of 100,000 nodes that are run on a super computer platform. The smaller mesh size has advantages in the design environment. Stag
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Ji, Hou, Zhang Hong, Ren Xinhua, Zhang Jia, and Peng Chen. "Simulation and study of the flow field in a kettle-type reactor for ethylene polymerization." Journal of Physics: Conference Series 2842, no. 1 (2024): 012050. http://dx.doi.org/10.1088/1742-6596/2842/1/012050.

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Abstract Addressing the complexities inherent in the polymerization process for solution method polyethylene production, particularly the challenges in describing the turbulent three-dimensional flow field within the reactor and the precise design of reactor structural parameters, this research leverages computational fluid dynamics (CFD) methods integrated with polymerization reaction kinetics equations. We have formulated User-Defined Functions (UDFs) for a quantitative representation of the polymerization process. Employing the Realizable k-epsilon turbulence model and Sliding Grid (SG) tec
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Barza, Tesfaye, and G. Lakshmikanth. "Flow Simulation And Performance Analysis Of Centrifugal Compressor Using Cfd_Tool." Journal of University of Shanghai for Science and Technology 23, no. 11 (2021): 693–703. http://dx.doi.org/10.51201/jusst/21/11941.

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This paper is concerned the flow simulation and performance analysis of the Centrifugal Compressor Using CFD – Tool. The complex internal flow of centrifugal compressor can be well analyzed, and the unique design system needs to be developed. It should be early to use the interface and also flexible for input and output. A 3-D flow simulation of turbulent – fluid flow is presented to visualize the flow pattern in-terms of velocity, streamline and pressure distribution on the blade surface are graphically interpreted. The standard K- e turbulence model and the simple model algorithm were chosen
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A. Wahab, Abdul Kareem, Khudheyer S. Mushatet, and Wissam H. Ajeel. "Experimental and Computational Investigation of Dynamics Effects in a High Speed Centrifugal Pump." University of Thi-Qar Journal for Engineering Sciences 4, no. 1 (2013): 25–46. http://dx.doi.org/10.31663/utjes.v4i1.170.

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Experimental and numerical investigation of a high speed centrifugal pump has been carried out. In experimental work, a test rig which includes a centrifugal pump, fast response piezoelectric pressure transducers, Rota meter flow and measurement instrumentations is designed and constructed. Two impellers having different outlet diameters were examined for the same volute. A data acquisition system (hardware) and its software (Visual Basic language) have been developed to analyze the pressure transducer signal in order to obtain the pressure fluctuations. The governing partial differential equa
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Honda, Hironori, Tadashi Kanzaka, Nobuhito Oka, Tom Verstraete, Arnaud Châtel, and Lasse Müller. "Performance improvement of centrifugal compressors for automotive turbochargers using adjoint method." Journal of Physics: Conference Series 2217, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1742-6596/2217/1/012010.

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Abstract A sensitivity calculation using adjoint method has a feature of low calculation cost because sensitivity information of all computational grid points can be calculated by only one numerical simulation. From this feature, it has been utilized as a calculation method of sensitivity information for a gradient-based optimization and this optimization procedure with adjoint method can be one of suitable ways for centrifugal compressor impeller which has a lot of design parameters such as meridional shape, blade angle and thickness. During the gradient-based optimization, mesh morphing, whi
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Lou, Yuan, Guangjie Peng, and Hao Chang. "Numerical simulation and thrust performance optimization of water jet thruster." Journal of Physics: Conference Series 2707, no. 1 (2024): 012113. http://dx.doi.org/10.1088/1742-6596/2707/1/012113.

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Abstract With the increasing use of water jet thrusters on ships, the demand for increasing their thrust performance and efficiency is also increasing. The impeller, as the core power component, is the key to the thrust of the water jet thruster. Therefore, to obtain a more energy-saving, low-carbon, and higher-thrust water jet thruster, this paper conducts an in-depth study on the impeller of the water jet thruster. The hexahedral grid is used to divide the internal flow field of the water jet thruster into structured grids, and the RANS equation and k-ε turbulence model are used to simulate
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Wang, Yesong, Zixuan Sun, Jisheng Liu, Manxian Liu, and Yong Zhou. "Optimization design of centrifugal impeller based on Bezier surface and FFD space grid parameterization." PLOS ONE 19, no. 11 (2024): e0310792. http://dx.doi.org/10.1371/journal.pone.0310792.

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To enhance the aerodynamic performance of centrifugal impellers, this study presents an advanced optimization design methodology. This methodology addresses the challenges associated with numerous design variables, inflexible configurations, and low optimization efficiency. We propose two distinct spline function parameterization techniques: a global mapping model for Bezier surfaces and a local mapping model for Free-Form Deformation (FFD) control bodies. We investigate the impact of these parameterization methods on blade geometry configuration and aerodynamic performance. By integrating the
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Dissertations / Theses on the topic "Grid impeller"

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Балалаєв, Антон Валерійович, та Anton Balalaiev. "Характеристики решітчастого дворядного робочого колеса вентилятора двоконтурного турбореактивного двигуна". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/48802.

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Дисертаційну роботу присвячено вирішенню науково-прикладної задачі підвищення ефективності дворядних лопаткових вінців вентиляторів двоконтурних турбореактивних двигунів шляхом застосування решітчастих дворядних робочих коліс. Вперше отримано характеристики решітчастого дворядного робочого колеса вентилятора ТРДД методом чисельного експерименту. Показано, що застосування решітчастих дворядних РК забезпечує підвищення ефективності вентилятора, збільшує його напірність. Ступінь підвищення тиску в діапазоні режимів обертання ротору від 2202…3010 об/хв збільшується до 10 % в порівнянні з дворядни
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Ратушний, Олександр Валерійович, Александр Валерьевич Ратушный та Oleksandr Valeriiovych Ratushnyi. "Повышение напорности ступени центробежного насоса путем усовершенствования лопастной решетки рабочего колеса". Thesis, Изд-во СумГУ, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40844.

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У дисертаційній роботі подане нове розв’язання наукової задачі, що полягає у підвищенні енергетичної ефективності ступеня відцентрового насоса. В якості шляху розв’язання цієї задачі розглядається можливість створення ступенів із суттєво більшим напором при тих самих геометричних розмірах, величинах витрати і швидкості обертання. На основі огляду науково-технічної інформаціі була обгрунтована актуальність теми дослідження, сформульовані його мета і задачи. Розв’язання наукової задачі полягає у поєднання різних способів впливу на геометрію лопатевої ґратки робочих коліс: використання дво
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Talbott, Christy J. "A Foundational Approach To Core Music Instruction In Undergraduate Music Theory Based On Common Universal Principles." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211987976.

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Sharma, Ashutosh. "Three Dimensional Computational Fluid Dynamic Simulation and Analysis of a Turbocharger Compressor." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3461.

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This thesis constitutes detailed computational investigation on ow through the passages of a centrifugal compressor used for turbocharging applications. Given the dynamic nature of operation of the turbocharger, it becomes necessary to under- stand the ow that occurs within the blade passages and its e ect on performance. CFD is an established computational technique wherein the ow is dissected to fun- damental levels and a detailed picture is presented, application of this technique with limited and diverse sense towards understanding of ows through a turbocharger compressor has been successf
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Sharma, Ashutosh. "Three Dimensional Computational Fluid Dynamic Simulation and Analysis of a Turbocharger Compressor." Thesis, 2013. http://etd.iisc.ernet.in/2005/3461.

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This thesis constitutes detailed computational investigation on ow through the passages of a centrifugal compressor used for turbocharging applications. Given the dynamic nature of operation of the turbocharger, it becomes necessary to under- stand the ow that occurs within the blade passages and its e ect on performance. CFD is an established computational technique wherein the ow is dissected to fun- damental levels and a detailed picture is presented, application of this technique with limited and diverse sense towards understanding of ows through a turbocharger compressor has been successf
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Book chapters on the topic "Grid impeller"

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Li, ZiWei, Cui Lv, Jihao Wu, et al. "Design of 10 L/s Liquid Hydrogen Pump with Integrated Inducer and Centrifugal Impeller." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_21.

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AbstractWith the global focus on energy and environmental issues, hydrogen energy development has become more and more important. The liquid hydrogen pump is an important equipment for hydrogen transportation, whose performance is significantly decided by the impeller. In this paper, we designed an integrated impeller with an inducer and an centrifugal impeller and optimized the axial length and outlet angle of the centrifugal impeller. Grid independence and cross validation prove that the simulation model and results are reliable. It is worth noting that a high roughness is given to the impel
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Offer, Avner. "Causes Of The Agricultural Depression, 1870-1914." In The First World War. Oxford University PressOxford, 1991. http://dx.doi.org/10.1093/oso/9780198202790.003.0008.

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Abstract The depression of British agriculture during the last quarter of the nineteenth century loosened the grip of British landowners on society and politics, it impelled the Irish to revolt, and it helped to split the Liberal party down the middle and to keep it out of power for a generation. As we shall see, it was also one of the distant causes of the First World War. Now what exactly do we mean by agricultural depression? The first symptom that meets the eye is the collapse of prices, followed by the decline of production and finally by the contraction of landed incomes and wealth, of r
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Conference papers on the topic "Grid impeller"

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Dorney, Daniel J., and Roger L. Davis. "Centrifugal Compressor Impeller Aerodynamics: A Numerical Investigation." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-213.

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A three-dimensional, Navier-Stokes analysis is presented for the prediction of viscous flows through centrifugal impellers. Based on the Navier-Stokes rotor/stator interaction procedure developed by Rai, the present analysis uses a zonal grid methodology to discretize the impeller flow field and to facilitate the relative motion of the impeller. A blade surface oriented O-grid generated from an elliptic partial differential equation solution procedure is patched into an algebraically generated H-grid which is used to discretize the inlet, exit and blade-to-blade regions. The equations of motio
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Lu, Chang-Shen, Zheng-Gui Li, Xin-rui Li, et al. "Numerical Analysis of Cavitation Flow in Low Specific Speed Condensate Pump Impeller." In 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia). IEEE, 2019. http://dx.doi.org/10.1109/isgt-asia.2019.8881723.

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Kang, Shun. "Numerical Investigation of a High Speed Centrifugal Compressor Impeller." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68092.

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This paper presents the CFD simulations of a high speed centrifugal compressor impeller using the NUMECA Fine/Turbo software with the one equation turbulence model of Spalart-Allmaras. The simulations are validated via comparison with the experimental data. The computational grid densities are changed with the impeller tip size and a grid independent study is carried out. The flow physics of the compressor impeller is numerically studied in details, in particular, the formation of shocks and their effects on the 3D flow and the secondary flow structure are analyzed at different operation condi
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Lapworth, B. L., and R. L. Elder. "Computation of the Jet-Wake Flow Structure in a Low Speed Centrifugal Impeller." In ASME 1988 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1988. http://dx.doi.org/10.1115/88-gt-217.

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The low speed flow through the shrouded de-Havilland Ghost centrifugal impeller is computed using an incompressible elliptic calculation procedure. The three dimensional viscous flow equations are solved using the SIMPLE algorithm in an arbitrary generalised coordinate system. A non-staggered grid arrangement is implemented in which pressure oscillations are eliminated using an amended pressure correction scheme. Flow computations are performed at ‘nominal’ low speed design and above design flow rates, and (on the coarse grids used in the calculations) good agreement is obtained with the exper
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Liu, Shuhong, Xuelin Tang, Yulin Wu, and Michihiro Nishi. "Simulation of Dense Solid-Liquid Two-Phase Flow in a Pump Impeller." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56208.

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In the present study, simulation with the second-order dynamic model for sub-grid stress is used to solve the governing equations of dense solid-liquid two-phase (DSLTP) flow numerically, and continuity is conserved by a mass-weighted method to solve the filtered governing equations. In the current second-order dynamic model with double dynamic coefficients, the sub-grid-scale stress is a function of both the strain-rate tensor and the rotation-rate tensor. This model considers the symmetry of the sub-grid-scale stresses, dimensional consistency with the Cauchy-Helmholtz theorem, the Smagorins
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Iwase, Taku, Kazuyuki Sugimura, and Ryuuichi Shimada. "Technique for Designing Forward Curved Bladed Fans Using Computational Fluid Dynamics and Numerical Optimization." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98136.

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We developed a technique for designing forward curved bladed fans using computational fluid dynamics (CFD) and numerical optimization. The target is a forward curved bladed fan including an impeller with blades and a volute casing. In our research, we developed a two-step calculation method with a blade-to-blade grid model and a full grid model. Using these models individually according to purpose, we reduced the design time by one quarter. An automatic grid-generation program that was developed in-house generated the grids for the CFD calculation. The fan performance was calculated using comm
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Asuaje, Miguel, Farid Bakir, Andres Tremante, Ricardo Noguera, and Robert Rey. "3D Quasi-Unsteady Flow Simulation in a Centrifugal Pump: Comparison With the Experimental Results." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56600.

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A 3D-CFD simulation of the impeller and volute casing of a centrifugal pump has been performed using commercial codes CFX 5.5 and CFX-TASCflow 2.12. The pump has an specific speed of 32 (metric units) and an outside impeller diameter of 400 mm. First, a 3D-flow simulation for the isolated impeller with a structured grid is presented. A sensitivity analysis regarding grid quality and turbulence models were also performed. A 3D quasi-unsteady flow simulation of the impeller-volute assembly is presented, as well. This flow simulation was carried out for several impeller blades and volute tongue r
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Wang, Tao, Fanyu Kong, Sunsheng Yang, and Yanxia Fu. "Numerical Study on Hydraulic Performances of Pump as Turbine With Forward-Curved Blades." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21347.

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A reserved running centrifugal pump can work as a hydraulic turbine with its wide application in industrial energy recovery and the development of micro-hydraulic power. In order to improve the efficiency from the point of turbine working condition, the impeller with forward-curved blades was designed and the hydraulic performances were further analyzed based on the commercial software ANSYS CFX 12.0 in this study. Moreover, to improve the computational accuracy of numerical simulations on turbines, the grid number, the turbulence model, the circumferential flow distribution in the clearance b
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Benra, Friedrich-Karl, Hans Josef Dohmen, and Bo Wan. "Determination of Pump Impeller Deflections: Comparison of FSI-Simulations to Measurements." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98464.

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The determination of pump rotor oscillations induced by exciting hydrodynamic forces requires both a solution of the flow field in the pump and an analysis of the structural mechanics of the pump rotor. In the present contribution, simulations which accomplished different coupling methods between the fluid dynamic solution and the structural analysis were carried out for a single-blade pump. In a first approach a one way coupling was used to determine the oscillations of the pump impeller during operation. The forces calculated from the transient flow field were treated as a load acting at the
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Benra, Friedrich-Karl, and Hans Josef Dohmen. "Comparison of Pump Impeller Orbit Curves Obtained by Measurement and FSI Simulation." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26149.

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Raw sewage water typically contains large amounts of solids and fibers. The transport of water comprising such impurities with centrifugal pumps requires a special impeller geometry, in order to avoid operational disturbances by clogging. Non-clogging sewage water pumps are equipped with impellers featuring a small number of blades. Single-blade impellers comprise the smallest number of blades and provide therefore the biggest cross sections of the flow channel. But there are also disadvantages which occur during pump operation, because the time-variant flow in such pumps results in periodic u
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