Thesis submitted in fulfillment of the requirements for the degree
Doctor of Technology: Mechanical Engineering
Cape Peninsula University of Technology, 2013 / Fluid flow through a porous channel and cylindrical pipe walls are important area
of research due to its wide applications in transpiration cooling, gaseous diffusion
technology, cooling of rocket, mechanized irrigation and filtration processes. It is
therefore necessary to examine the effect of Navier slip, combined effects of buoyancy
forces and variable viscosity on the entire flow structure. Analyzing the magneto-
hydrodynamics (MHD) of unsteady flow with buoyancy effect and also investigate
numerically the entropy generation in an unsteady flow through porous pipe. We
have also examined the thermal stability and entropy generation in the system. The
problems were investigated theoretically using appropriate mathematical models for
both transient and steady state scenario. Both analytical techniques and numerical
methods are employed to tackle the model nonlinear equations derived from the law
of conservation of mass, momentum and energy balance.
Some definitions of terms to come across and introduction to fluid flow are given in
chapter 1, together with literature reviews, statement of problem and objectives of
the study.
Chapter 2 lays the foundation for basic fundamental equations governing fluid flow.
In chapter 3, the combined effect of suction/injection and asymmetric Navier slip on
the entropy generation rate for steady flow of an incompressible viscous fluid through a porous channel subjected to different temperature at the walls are investigated.
Chapter 4 analyze combined effects of buoyancy forces together with Navier slip on
the entropy generation in a vertical porous channel wall with suction/injection wall.
Analysis of MHD unsteady flow through a porous pipe with buoyancy effects are
carried out in chapter 5, while chapter 6 investigates numerically entropy generation
of unsteady flow through a porous pipe with suction and chapter 7 gives concluding
remarks.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cput/oai:localhost:20.500.11838/1303 |
| Date | January 2013 |
| Creators | Eegunjobi, Adetatayo Samuel |
| Publisher | Cape Peninsula University of Technology |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | http://creativecommons.org/licenses/by-nc-sa/3.0/za/ |
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