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Numerical experiments with laminar fluid convection between concentric and eccentric heated rotating cylinders. (English) Zbl 0557.76101
Summary: A numerical investigation is carried out to determine the temperature and flow patterns of a fluid bounded by two horizontal isothermal eccentric cylinders. The inner cylinder is assumed to be at a higher temperature and rotating. The numerical method involves a mesh transformation technique coupled with the introduction of ”false transient” parameters for the steady-state solution of the problem. The parameters studied were for a Prandtl number of 0.7 and a radius ratio of 2.6 at different Rayleigh numbers, Reynolds numbers, and eccentricities. The results show that the mean Nusselt number increases with Rayleigh number. For a fixed Rayleigh number, when the inner cylinder is made to rotate, the mean Nusselt number decreases throughout the flow.

MSC:
76Rxx Diffusion and convection
76-04 Software, source code, etc. for problems pertaining to fluid mechanics
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