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Relevant bibliographies by topics / Stodola formula

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Academic literature on the topic 'Stodola formula'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Stodola formula"

1

IKE, Charles Chinwuba. "CRITICAL BUCKLING LOAD SOLUTION OF THIN BEAM ON WINKLER FOUNDATION VIA POLYNOMIAL SHAPE FUNCTION IN STODOLA-VIANELLO ITERATION METHOD." Journal of Research in Engineering and Applied Sciences 8, no. 3 (2023): 591–95. http://dx.doi.org/10.46565/jreas.202383591-595.

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The critical buckling load analysis of thin beam on Winkler foundation (BoWF) is crucial for BoWF subjected to in-plane compressive load. This paper presents the Stodola-Vianello method for the approximate solution of the governing ordinary differential equation (ODE). The Stodola-Vianello method expresses the ODE in iteration form after four successive integrations have been used in reformulating the equation. The problem then reduces to iteration in algebra. By deriving algebraic buckling shape functions that satisfy the boundary conditions, and substitution into the Stodola-Vianello iterati

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Jain, Vaibhav, Rajiv Rawat, Gulshan Sachdeva, and Vikas Kumar. "Multi-Objective Optimization of Cascade Refrigeration System Using the Concept of Modified and Advanced Exergy, Risk Level and Thermal Inventory." International Journal of Air-Conditioning and Refrigeration 28, no. 04 (2020): 2050036. http://dx.doi.org/10.1142/s2010132520500364.

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This work conceives the performance of vapor compression cascaded refrigeration system (CRS) from the exergy, safety and thermal inventory points of view employing the theory of effective temperature ([Formula: see text] than environment temperature ([Formula: see text] in Gouy–Stodola equation. Comparative results show that the actual irreversible loss in CRS is 8.1% higher. Further, advanced exergy analysis results showed that 17.985[Formula: see text]kW irreversible loss (out of 33.737[Formula: see text]kW irreversible loss) in the system is evadable with improvement in the system design. B

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IKE, Charles Chinwuba. "STODOLA-VIANELLO ITERATION METHOD FOR FREE TORSIONAL VIBRATION ANALYSIS OF MONOSYMMETRIC BOX-BEAM BRIDGES." Journal of Research in Engineering and Applied Sciences 9, no. 1 (2024): 700–705. http://dx.doi.org/10.46565/jreas.202491700-705.

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Box-beam bridges are used in large spans and wider decks due to their high strength and greater torsional and flexural stiffness. They are usually prone to vibration due to moving vehicular traffic. Their eigenfrequency analysis is a crucial aspect of their design in order to ensure that the natural frequency is not close to the excitation frequency to avert resonance failures. The free torsional vibration equation is a fourth order partial differential equation (PDE) with variable parameters. For prismatic cross-sections, homogeneous and isotropic materials the governing PDE have constant par

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van Hilten, Max J., and Paul H. M. Wolkenfelt. "The Rate of Turn Required for Geographically Fixed Turns: A Formula and Fast-Time Simulations." Journal of Navigation 53, no. 1 (2000): 146–55. http://dx.doi.org/10.1017/s0373463399008590.

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This paper concerns the derivation of a formula to follow geographically fixed turns in a homogeneous current or tidal stream. Until now, various well-founded but limited approximations have been used. In principle, all these approximations are based on the formula v = ω × R. One result of this research is the development and use of a fast-time simulation program. The initial aim was to illustrate to trainees the consequences and, in particular, the possible dangers of these approximations. The fast-time simulation program can be used in support of real-time simulation. Comparisons with real-t

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Tan, J. J., D. T. Qi, and T. F. Luo. "A new approach to the calculation of Euler work for centrifugal fan impellers." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 7 (2009): 1591–96. http://dx.doi.org/10.1243/09544062jmes1396.

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In a conventional one-dimensional scheme design of centrifugal fans and compressors, it is assumed that there is no flow prewhirl at the impeller inlet when the inlet guide vane is absent. However, many experiments have proved that the flow prewhirl does exist at the inlet of centrifugal impellers. This results in an error in the design of centrifugal fans and compressors. In this study a new method is presented to calculate the Euler work of centrifugal impellers considering the presence of an inlet flow prewhirl in the case without the inlet guide vane. Stodola's approach dealing with the sl

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Capurso, Tommaso, Michele Stefanizzi, Giuseppe Pascazio, et al. "Slip Factor Correction in 1-D Performance Prediction Model for PaTs." Water 11, no. 3 (2019): 565. http://dx.doi.org/10.3390/w11030565.

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In recent years, pumps operated as turbines (PaTs) have been gaining the interest of industry and academia. For instance, PaTs can be effectively used in micro hydropower plants (MHP) and water distribution systems (WDS). Therefore, further efforts are necessary to investigate their fluid dynamic behavior. Compared to conventional turbines, a lower number of blades is employed in PaTs, lowering their capability to correctly guide the flow, hence reducing the Euler’s work; thus, the slip phenomenon cannot be neglected at the outlet section of the runner. In the first part of the paper, the slip

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7

Longaresi, R. H., and S. D. Campos. "Use of the Gouy–Stodola Theorem in Classical Mechanic Systems: A Study of Entropy Generation in the Simple Pendulum." Physics Educator 04, no. 04 (2022). http://dx.doi.org/10.1142/s2661339522500184.

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Both classical mechanics and thermodynamics live in the core of physics. They are two different aspects of the same thing, one can say. The thermodynamic equivalent of a mechanical system is one of the main achievements of the 19th century. Regarding only thermodynamics, the introduction of entropy, roughly defined in many textbooks as the unuseful energy present in a physical system, is a victory of Rudolf Clausius. Unlike energy, entropy can be produced in a physical system under certain conditions. We can act to increase the degree of disorder (statistical mechanics) in a physical system. H

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Capurso, Tommaso, Michele Stefanizzi, Giuseppe Pascazio, et al. "Slip Factor Correction in 1-D Performance Prediction Model for PaTs." March 19, 2019. https://doi.org/10.3390/w11030565.

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In recent years, pumps operated as turbines (PaTs) have been gaining the interest of industry and academia. For instance, PaTs can be effectively used in micro hydropower plants (MHP) and water distribution systems (WDS). Therefore, further efforts are necessary to investigate their fluid dynamic behavior. Compared to conventional turbines, a lower number of blades is employed in PaTs, lowering their capability to correctly guide the flow, hence reducing the Euler's work; thus, the slip phenomenon cannot be neglected at the outlet section of the runner. In the first part of the paper, the slip

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9

Zheng, Wei, Jianjun Sun, Chenbo Ma, and Qiuping Yu. "Theoretical study on the pressure expansion mechanism of diffused self-pumping hydrodynamic mechanical seal." Physics of Fluids 35, no. 12 (2023). http://dx.doi.org/10.1063/5.0173982.

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The pressure expansion performance is the key and basis for the diffused self-pumping hydrodynamic mechanical seal to achieve its good cooling performance, self-cleaning performance, and sealing performance. Using the moment of momentum theorem and Stodola's formula, the pressurization effect of the spiral groove on the fluid was analyzed, and the energy head equation of the work done by the spiral groove on the fluid is established. According to the principle of conservation of energy, the energy equation and Bernoulli equation of the work done by the spiral groove on the fluid are derived, t

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Dissertations / Theses on the topic "Stodola formula"

1

Бондаренко, Герман Андрійович, Герман Андреевич Бондаренко, Herman Andriiovych Bondarenko, Вадим Миколайович Бага, Вадим Николаевич Бага та Vadym Mykolaiovych Baha. "Влияние физических свойств газов на характеристики лабиринтного уплотнения". Thesis, Сумский государственный университет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/39428.

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Conference papers on the topic "Stodola formula"

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Capata, Roberto, and Enrico Sciubba. "Use of Modified Balje Maps in the Design of Low Reynolds Number Turbocompressors." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85582.

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The design of micro and ultra-micro turbomachinery introduces severe challenges due to the absence of a reliable and sufficiently extended database, so that the phenomenological differences among micro-turbomachines and between micro- and commercial-scale devices must be semi-empirically modelled from case to case. Scope of this study is to verify the possibility of extending the usual design correlations and maps to such small scales: specifically, this paper presents a procedure to conveniently modify the standard performance Balje map so that it can be adopted “as is” in the design of a mic

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Wettstein, Hans E. "Polytropic Change of State Calculations." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36202.

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Polytropic change of state calculations are used within many thermodynamic cycle analysis tasks for turbomachinery like gas turbines or compressors. The typical approach is using formulas, which are theoretically valid for ideal gas conditions only. But often gases are used, which do certainly not behave like ideal gases. This is motivation to check how and which polytropic change of state algorithms can be used for real gases or corresponding mixtures. There is a vast experience on polytropic efficiencies achievable with existing turbomachinery. Manufacturers calibrate their performance analy

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Wettstein, Hans E. "Survey of Calculation Methods for Polytropic Efficiencies." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59967.

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Abstract Calculating polytropic efficiencies is a basic task used for quantifying performance of power cycles involving compression and/or expansion. The incremental definition of a “polytropic curve” of gases by Gustav Zeuner in 1905 may be the oldest mention of the word “polytropic” in a thermodynamic context [1]. In Turbomachinery blading, the typical changes of state are nearly adiabatic and polytropic. L. S. Dzung was probably the first defining an incremental polytropic efficiency in 1944 [3]. Recursive integration of this has become the best thermodynamic quality measure of a blading. B

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Iandoli, Carmine Luca, and Enrico Sciubba. "Entropy Generation Maps of a Low-Specific Speed Radial Compressor Rotor." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1358.

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Abstract The flow field in the rotor of a low-specific speed radial compressor is computed in a fully 3-D simulation and the irreversible entropy generation rates directly calculated from the local velocity- and temperature values. The code used for the simulation is a commercial CFD-finite volumes package, FLUENT™, augmented by an novel entropy generation routine adapted from the original formulation due to Bejan [1]. The model provides the designer with exact and detailed knowledge of the local values of the irreversibility production, allowing for a separate accounting of viscous- and therm

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Xi, Guang, Huijing Zhao, and Zhiheng Wang. "Trailing Edge Filings and a Modified Stodola’s Slip Factor for Centrifugal Impeller." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42874.

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The paper investigates the effect of trailing edge filing in the impeller on the performances of impeller and compressor stage. The 3D viscous numerical simulations are carried out under different positions, thicknesses and lengths of filing. The results show that, the filing on the trailing edge has an obvious effect on the pressure ratios of impeller and compressor stage. The trailing edge filing has little effect on the impeller efficiency while the filing on the pressure side is favorable to improving the stage efficiency. Then, through correcting the blade angles at the suction and pressu

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Wettstein, Hans E. "Quality Key Numbers of Gas Turbine Combined Cycles." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14508.

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Abstract The most relevant quality key numbers for the largest and most efficient Gas Turbine Combined Cycles (GTCC) are not (only) the data published by the original engine manufacturers OEM’s. Additional numbers are here evaluated with educated guesses based on published data of the latest announcements of the “big four OEM’s” [8]. Such data are of interest for potential customers but also for nailing down the current state-of-the-art for all kind of further cycle studies using turbomachinery components and also as a contemporary history record. Making educated guesses means thermodynamic 1D

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