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Title: Squeezed Flows with Heat and Mass Transfer
Authors: Ahmad, Shakeel
Keywords: Physical Sciences
Issue Date: 2020
Publisher: Riphah International University, Islamabad
Abstract: This thesis focuses on the heat and mass transfer features in two-dimensional, unsteady and incompressible squeezing flow of Newtonian/ non-Newtonian fluids between two horizontal plates. Here, linear stretching of permeable/ impermeable lower plate is taken into account. Characteristics of magnetohydrodynamic (MHD) are incorporated in the squeezing flow analysis. Fourier’s and Fick’s laws/ Cattaneo-Christov heat and mass fluxes models are implemented to uncover the features of heat and mass transport. Variable fluid features, heat generation/absorption and chemical reaction are modeled with Cattaneo-Christov heat and mass flux models for the first time. Further, melting heat transfer and convective boundary conditions are investigated mathematically with thermal and solutal stratification phenomena. Characteristics of Newtonian nanofluids are studied using Buongiorno’s model. Other physical phenomena such as, velocity slip, thermal slip, solutal slip, binary chemical reaction with activation energy, Darcy porous medium, Darcy-Forchheimer porous medium, thermal radiation, first order chemical reaction, mixed convection, viscous dissipation, heterogeneoushomogeneous chemical reactions and Joule heating are encountered to analyze the fluid flow with heat and mass transfer. Viscous, Maxwell, Jeffrey and Sutterby fluids are utilized to scrutinize the squeezing flow deformed between two horizontal plates. The equations of flow, energy and concentration are converted into non-linear ordinary differential equations with the help of suitable transformations. Efficient convergent technique (i.e., homotopy analysis method) is employed to evaluate the resulting solutions of non-linear systems. Descriptions of numerous emerging parameters on temperature, velocity and concentration are demonstrated graphically and physically. Skin-friction, heat and mass transfer coefficients are graphically elaborated.
Gov't Doc #: 20872
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

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