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Combined convection flow of a power-law fluid in a vertical duct with linearly varying wall temperatures. (English) Zbl 0851.76081

We consider steady laminar combined flows of power-law fluids between vertical parallel plates with a uniform temperature gradient applied to the walls. The parabolic equations are written in an implicit finite-difference form and are solved using a marching technique. Under certain circumstances, reverse flow regions appear either at the centre or adjacent to the walls of the duct, and these are present in the fully developed flow. These reverse flow problems are dealt with using an iterative technique. In order to assess the effects of recirculation and pseudoplasticity on the flow and heat transfer characteristics, flow profiles, Nusselt numbers and friction factors are presented for various values of the governing parameters.

MSC:

76R05 Forced convection
76R10 Free convection
76A05 Non-Newtonian fluids
80A20 Heat and mass transfer, heat flow (MSC2010)

Software:

FMSLIB; d02; NAG
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References:

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