Entropy Generation Through Heat And Fluid Flow Pdf
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Gamal M. Chemical entropy generation and magnetohydrodynamic effects on the unsteady heat and fluid flow through a porous medium have been numerically investigated. The entropy generation due to the use of a magnetic field and porous medium effects on heat transfer, fluid friction, and mass transfer have been analyzed numerically.
- Entropy generation through heat and fluid flow
- The Method of Entropy Generation Minimization
- Entropy Generation in a Rotating Couette Flow with Suction/Injection
Entropy generation through heat and fluid flow
This article deals with the investigation of three-dimensional axisymmetric steady flow of micropolar fluid over a rotating disk in a slip-flow regime. Further, the generation of entropy due to heat transfer and fluid friction is identified. It is noticed that the entropy generation can be decreased and controlled in the presence of slip. The anisotropic slip has vital characteristics and it has a great influence on the flow field and heat transfer. The impact of some important parameters on velocity profiles, angular velocity microrotation and energy distribution is discussed and illustrated through graphs and tables. The effects of physical parameters on the entropy generation and Bejan numbers are also presented graphically. In addition, the most favorable agreement is observed among the results of the present study and those of the earlier studies.
The Method of Entropy Generation Minimization
Bejan, A. June 1, June ; 50 2 : Sign In or Create an Account. Sign In. Advanced Search.
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Bejan and J. Bejan , J. The first textbook to bridge the gap between three cornerstones of engineering education: fluid mechanics, thermodynamics and heat transfer. It provides an effective method to teach the thermodynamic second law aspects of heat and fluid flow processes, and shows how to use such processes in the design of energy-efficient devices.
The first textbook to bridge the gap between three cornerstones of engineering education: fluid mechanics, thermodynamics and heat transfer. It provides an.
Entropy Generation in a Rotating Couette Flow with Suction/Injection
This study aims to investigate a three-dimensional computational modelling of free convection of Al 2 O 3 water-based nanofluid in a cylindrical cavity under heterogeneous heat fluxes that can be used as a thermal storage tank. Effects of different heat flux boundary conditions on heat transfer and entropy generation were examined and the optimal configuration was identified. The simulation results for nanoparticle NP volume fractions up to 4 per cent, and Rayleigh numbers of 10 4 , 10 5 and 10 6 were presented. The results showed that for low Ra 10 4 the heat transfer and entropy generation patterns were symmetric, whereas with increasing the Rayleigh number these patterns became asymmetric and more complex.