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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 67, 2015 - Issue 4
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Original Articles

Cross-Buoyancy Mixed Convection Around a Confined Triangular Bluff Body

, &
Pages 454-475 | Received 18 Mar 2014, Accepted 27 May 2014, Published online: 23 Oct 2014
 

Abstract

Two-dimensional numerical simulations are carried out to understand the effects of cross-buoyancy on the confined flow and heat transfer characteristics over an equilateral triangular bluff body at low and intermediate Reynolds numbers (Re). For a fixed Richardson number (Ri), an average cylinder Nusselt number increases with increasing Re. However, the average Nusselt number shows a soft response toward increasing Ri. The critical Re for the onset of periodic unsteady flow increases with increasing cross-buoyancy (Ri). A simple heat transfer correlation is also obtained to relate the values of average cylinder Nusselt number, Re, and Ri.

Acknowledgments

The authors would like to thank two anonymous reviewers for their positive comments on this work.

Notes

Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/unht.

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