ENTROPY GENERATION IN JEFFREY FLUID FLOW THROUGH CHANNEL WITH INCLINED MAGNETIC EFFECT

Abstract

Predicting the characteristics of heat and mass transfer in natural or mixed convection is crucial due to its practical engineering applications. Numerous studies have been conducted on combined heat and mass transfer in Newtonian fluids. How ever, it is widely recognized that many fluids used in chemical and related processing do not adhere to Newton’s classical law and are classified as non-Newtonian fluids. Various mathematical models have been developed to describe the rheological be havior of these non-Newtonian fluids. No single fluid model accurately captures all the properties of real fluids. As a result, over the past century, several fluid models have been proposed to characterize the behavior of real fluids. Among these, Jeffrey f luids introduced by George Barker Jeffrey which is capable of describing the stress relaxation property of non-Newtonian fluids. The Jeffrey fluid displays an extrinsic correlation between stress and strain rate. The Jeffrey fluid explains the concepts of retardation and relaxation time. The aim of this thesis is to study about en tropy generation analysis in free and mixed convection heat and mass transfer in Jeffrey fluid in the presence of inclined magnetic, radiation, chemical reaction, and Soret effects. The problems considered deal with vertical parallel plates and inclined parallel plates. The thesis is divided into four parts and six chapters. Part-I includes a single introductory chapter (chapter 1), which presents the basic equations for the flow, heat, and mass transfers of Jeffrey fluids and a review of relevant literature. Part II contains two chapters (i.e. chapters 2 and 3) and deal with inclined magnetic, chemical reaction, and radiation effects on entropy generation of Jeffrey fluid flow between vertical parallel plates. Part-III contains two chapters (chapters 4 and 5) investigates the impact of Soret number, chemical reaction, and angled magnetic f ield on entropy generation of Jeffrey fluid flow between inclined parallel plates. In all the above chapters, using similarity transformations, the nonlinear gov erning equations along with boundary conditions are first transformed into a non dimensional form. The spectral quasi-linearization approach is used to solve the resulting system of equations. The impact of Jeffrey fluid parameter and some other parameters on entropy, velocity of fluid, temperature, and concentration are presented graphically. Part-IV consists of a single chapter (chapter 6), which presents the summary of the thesis with main conclusions and point out various problems which are yet to be solved in this area of research