Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9506399 | Applied Mathematics and Computation | 2005 | 19 Pages |
Abstract
This paper presents a numerical study of the formation of Goertler vortices in natural convection flow over a concave surface with rotation. The onset position characterized by the Grashof number Grδr, depends on the rotational Reynolds number, the Prandtl number (Pr = 0.7 for air) and the wave number. The buoyancy force and Coriolis force are found to significantly affect the flow structure and heat transfer. However, centrifugal force has minor stabilizing effect on the flow. Positive rotation stabilizes the boundary layer flow on the concave surface. On the contrary, negative rotation destabilizes the flow. The numerical data show reasonable agreement with the experimental results in the case of zero rotation.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Ming-Han Lin, Chin-Tai Chen,