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Publication Type : Journal Article
Publisher : Journal of Applied Fluid Mechanics,
Source : Journal of Applied Fluid Mechanics, Volume 14, Number 2, p.515-526 (2021)
Campus : Amritapuri
School : School of Engineering
Department : Mechanical Engineering
Year : 2021
Abstract : Flow past a heated cylinder kept at constant surface temperature is computationally simulated and analyzed in the laminar regime at moderate buoyancy. In this study, we have restricted to moderate Reynolds numbers to completely eliminate the presence of mode-A and mode-B instabilities. The three dimensional transition due to the mode E instability is captured using a cell-centered finite volume method. The present study reveals the existence of two different kinds of coherent structures-the "surface plumes" and the "mushroom structures". The role of these mushroom structures in the heat transfer mechanism and the changes that the Prandtl number would bring into this coherent structure are discussed. The mushroom structures observed show high dependency on the changes in Prandtl number whereas the surface plumes are found almost unaffected.
Cite this Research Publication : Dr. Anil Lal S. and S, A. Kumar, “Effects of Prandtl Number on Three Dimensional Coherent Structures in the Wake behind a Heated Cylinder”, Journal of Applied Fluid Mechanics, vol. 14, pp. 515-526, 2021.