Back close

Effects of Prandtl number on three dimensional “mushroom structures” in the wake behind a heated cylinder

Publication Type : Conference Proceedings

Publisher : 7th International & 44th National Conference on fluid flow and fluid power(FMFP-2018) , IIT Bombay .

Source : 7th International & 44th National Conference on fluid flow and fluid power(FMFP-2018) , IIT Bombay (2018) (2018)

Campus : Amritapuri

School : School of Engineering

Department : Mechanical Engineering

Year : 2018

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. Ajith Kumar S., A. Sameen, and S. Anil Lal, “Effects of Prandtl number on three dimensional “mushroom structures” in the wake behind a heated cylinder”, 7th International & 44th National Conference on fluid flow and fluid power(FMFP-2018) , IIT Bombay (2018). 2018.

Admissions Apply Now