A Study Of Entropy Production For Twodimensional Heat Transfer System By Finite Volume Method

The current progress in the field of Computational Fluid dynamics(CFD) has compelled many researchers to use computer based solutions instead of experimental setup in-order to understand and validate their findings. Heat transfer and fluid flow are important areas of research due to its wide applications in this world of modern technology. The concept of entropy production through heat transfer and fluid flow is mostly found in many industrial applications. Therefore, it is necessary to examine the effects of entropy production through heat transfer and fluid flow at different working conditions.In this dissertation the entropy production for two-dimensional heat transfer system has been analyzed systematically with the help of suitable numerical scheme based on Finite volume method(FVM). The computations have been performed by employing Computational fluid dynamics(CFD) codes. We have investigated the accuracy and stability of numerical simulation for two-dimensional heat transfer system and we have also analyzed the behavior of entropy production with effect of heat flux for different geometries. Furthermore, the effects of entropy production rate on a pipe were examined. The problems were investigated by using entropy production formula along with numerical techniques.. The steady state heat conduction problem has been investigated for entropy production by considering effect of heat flux. The results show that the entropy production profile is largely affected by heat flux near the wall as peak values of heat flux occur near to the wall. The entropy production profile for both cases has been calculated for two-dimensional heat conduction problems based upon the current approach and this approach has been proved to be effective.We numerically have analyzed the response of entropy production rate on the pipe subjected to constant pressure under gravity, buoyancy effects and magnetic strength; hence findings reveal that the fluid friction strongly dominates over heat transfer at the walls of the pipe, thus entropy production rate is maximum at the walls of the pipe.In addition, this work considers the numerical approach for entropy production theory in two dimensional heat transfer system and develops a new numerical analysis criteria for multidimensional systems not available in the literature.