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Entropy Generation Rate for a Peristaltic Pump
Journal of Non-Equilibrium Thermodynamics, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Souidi, Ferhat +2 more
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Optics and Lasers in Engineering, 2008
Laser pulse heating of solid surface and entropy generation during the heating process are considered. Time exponentially decaying pulse is accommodated in the analysis and the laser pulse parameter (β1/β2) resulting in minimum entropy generation rate is computed. Analytical solutions for temperature rise are presented and volumetric entropy generation
H. Al-Qahtani, B.S. Yilbas
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Laser pulse heating of solid surface and entropy generation during the heating process are considered. Time exponentially decaying pulse is accommodated in the analysis and the laser pulse parameter (β1/β2) resulting in minimum entropy generation rate is computed. Analytical solutions for temperature rise are presented and volumetric entropy generation
H. Al-Qahtani, B.S. Yilbas
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Determination of LEDs degradation with entropy generation rate
Journal of Applied Physics, 2017We propose a method to assess the degradation and aging of light emitting diodes (LEDs) based on irreversible entropy generation rate. We degraded several LEDs and monitored their entropy generation rate (Ṡ) in accelerated tests. We compared the thermoelectrical results with the optical light emission evolution during degradation.
Angel Cuadras +2 more
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The Measurement and Prediction of Boundary Layer Entropy Generation Rate
Fluids Engineering, 2003In this paper hot wire measurements of the boundary layer velocity profiles at discrete locations along the suction surface of a turbine blade profile are presented. The measured aerodynamic data is transformed into thermodynamic data by way of the entropy function for the investigated Reynolds numbers of 76,000, 120,000 and 185,000 based on inlet ...
E. J. Walsh, M. R. D. Davies
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Flow-Induced Endothelial Surface Reorganization and Minimization of Entropy Generation Rate
Journal of Biomechanical Engineering, 2004Effects of hydrodynamic shear on the shape of the endothelial surface are examined based on evaluations of the rate of entropy generation at the cell surface. A linear solution of the flow over a sinusoidally varying endothelial surface is used to evaluate the entropy generation rate on the cell surface for which measured cell dimensions are available.
Haidong, Liu, Uichiro, Narusawa
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On the Assessment of Mechanical Degradation of Grease Using Entropy Generation Rate
Tribology Letters, 2019A methodology for continuous monitoring of grease degradation subjected to mechanical shearing is proposed. It is hypothesized that the mechanical degradation of grease is akin to the running-in process in a tribo-pair with both transient and steady-state regimes.
K. P. Lijesh, M. M. Khonsari
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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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Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2022
A detailed numerical analysis is carried out in a real human thoracic aorta by means of the Computational Fluid Dynamics (CFD) for the prediction of the atherosclerosis lesion. Common hemodynamics parameters, such as, the oscillatory shear index (OSI) and the time average wall shear stress (TAWSS) are used for the prediction of the atherosclerosis ...
Jesús A Crespo-Quintanilla +4 more
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A detailed numerical analysis is carried out in a real human thoracic aorta by means of the Computational Fluid Dynamics (CFD) for the prediction of the atherosclerosis lesion. Common hemodynamics parameters, such as, the oscillatory shear index (OSI) and the time average wall shear stress (TAWSS) are used for the prediction of the atherosclerosis ...
Jesús A Crespo-Quintanilla +4 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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