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Comparison of Entropy Generation Rate Calculation Methods for Engineering Applications
43rd AIAA Thermophysics Conference, 2012Physics-based modeling and simulation requires proper formulation of the fundamental equations for numerical solution in order to best-represent the physical system being modeled. A standard engineering method to calculate the entropy generation rate is to assume steady flow and then use the steady entropy balance equation.
John Doty, Jose Camberos, Kirk Yerkes
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Investigation of Hot Film Calibration for Entropy Generation Rate Calculations
Volume 1: Fora, Parts A and B, 2002The objective of this paper is to investigate in detail the relationship between results obtained from flow over a circular cylinder in cross flow using Hot Film and Hot Wire Constant Temperature Anemometry (C.T.A.). The experimental results are compared with those obtained using numerical methods. The results obtained from Hot Wire Anemometry are used
R. Mahon, P. Frawley, M. R. D. Davies
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Entropy production rate and time-reversibility for general jump diffusions on RRn
Chaos: An Interdisciplinary Journal of Nonlinear ScienceThis paper investigates the entropy production rate and time-reversibility for general jump diffusions (Lévy processes) on Rn. We first formulate the entropy production rate and explore its associated thermodynamic relations for jump diffusions. Subsequently, we derive the entropy production rate using the relative entropy between the forward and time ...
Qi Zhang, Yubin Lu
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Energy Conversion and Management, 2013
Abstract The analysis of the equivalence between the minimum entropy generation (MEG) rate and the maximum conversion rate for a reactive system is the main purpose of this paper. While being used as a strategy of optimization, the minimum entropy production was applied to the production of propylene glycol in a Continuous Stirred-Tank Reactor (CSTR)
Heleno Bispo +3 more
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Abstract The analysis of the equivalence between the minimum entropy generation (MEG) rate and the maximum conversion rate for a reactive system is the main purpose of this paper. While being used as a strategy of optimization, the minimum entropy production was applied to the production of propylene glycol in a Continuous Stirred-Tank Reactor (CSTR)
Heleno Bispo +3 more
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Entropy Generation Rate for Performance of Heat Transfer in Heat Exchangers
2022This chapter provides a specific study of the performance of thermal systems, principally heat exchangers, which are applied in several industrial applications such as chemical industry, energetic industry, industrial lasers, and so on. These thermodynamics systems were critical in transferring heat from a higher to a lower temperature fluid. They have
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Energy Conversion and Management, 2004
Constructal theory uses a tree network of conducting paths to discharge the heat generated in a uniform heat generating area to a heat sink located on its border. Constructal theory aims to decrease the global thermal resistance, in other words, to improve the heat flow performance of the heat generating area by increasing the complexity of the tree ...
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Constructal theory uses a tree network of conducting paths to discharge the heat generated in a uniform heat generating area to a heat sink located on its border. Constructal theory aims to decrease the global thermal resistance, in other words, to improve the heat flow performance of the heat generating area by increasing the complexity of the tree ...
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Entropy generation rate optimisation for profiled endwall design for axial turbines
Proceedings of Global Power & Propulsion SocietyThis paper investigates the formulation of the optimal objective function for aerodynamic design of turbomachinery using genetic algorithms (GA) supported by Computational Fluid Dynamics (CFD). The aim is to outline entropy generation rate minimisation as the most suitable objective function for improving turbomachinery. To this end, the calculation of
Pedro A. Martinez-Castro +2 more
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Some Remarks About the Computation of the Entropy Generation Rate in Turbomachinery
2009accepted for publication ...
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Entropy generation rate for a mechatronics system
International Journal of Exergy, 2017openaire +1 more source
Analysis of entropy generation rate for auxetic structures
International Journal of ExergyY. Pehlivanolu, Mehmet Sunar
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