Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12323
Title: on the linear stability analysis of the thermal lnstability problem
Authors: Salah Eldin Ahmed Mohammed Eltahir
Keywords: analysis of the thermal
Issue Date: 2008
Publisher: Neelain University
Abstract: Abstract The linear stability analysis of a Newtonian incompressible fluid in a vertical curved channel formed by two coaxial cylindrical surfaces with a radial temperature gradient and an azimuthal pressure gradient shows that the critical modes are oscillatoiy and non-ax symmetric. A generalized Ray leight dicriminant which includes both the curvature and buoyancy effect is derived. Centrifugal buoyancy induces week asymmetry of the dependence of the control parameter critical values on the sign of the temperature gradient . The critical parameters depend on the temperature gradient, the radius ratio and the nature of the fluid . For a wide curvature channel flow ,there are two critical modes : oscillatory Dean modes for small temperature gradients and oscillatory centrifugal — thermal modes for relatively large temperature gradients . m
Description: Thesis Submitted in Fulfillment of the Requirements for Degree of the Ph.D in Mathematics
URI: http://hdl.handle.net/123456789/12323
Appears in Collections:PHD theses : Statistics

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