Effect of rotation on the formation of longitudinal vortices in mixed convection flow over a flat plate |
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| Authors: | Ming-Han Lin Chin-Tai Chen |
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| Affiliation: | (1) Department of Automation Engineering, Ta-Hwa Institute of Technology, Hsinchu, 307, Taiwan ROC;(2) Department of Industrial Engineering and Management, Ta-Hwa Institute of Technology, Hsinchu, 307, Taiwan ROC |
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| Abstract: | This paper presents a numerical study of the effect of rotation on the formation of longitudinal vortices in mixed convection flow over a flat plate. The criterion on the position of marking the onset of longitudinal vortices is defined in this paper. The onset position characterized by the Goertler number G δ depends on the Grashof number, the rotation number Ro, the Prandtl number Pr and the wave number. The results show that negative rotation stabilizes the boundary layer flow on the surface. On the contrary, positive rotation destabilizes the flow. The numerical data are compared with the experimental results. |
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