Determination of Flow Characteristics and Turbulent Heat Transfer in a Ribbed Roughened Square Duct, Part 2: Numerical Simulations

Abstract:

In the part 1 of this research, some useful turbulence models presented. In that part advantages of those turbulence models has been gathered. In the next, numerical details and procedure of solution are presented in details. By use of different turbulence models, it has been found that Spallart-Allmaras predicted the lowest value of heat transfer coefficient; in contrast, RSM¹ has projected the more considerable results compared with other models; besides, it has been proven that the two-equation models prominently taken lesser time than RSM model. Eventually, the RNG² model has been introduced as the optimized model of this research; moreover.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 2364-2369
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.2364
• Online since: October 2011
• Authors: Amin Etminan, H. Jafarizadeh, M. Moosavi, K. Akramian
• Keywords: Heat Transfer Enhancement, RANS Model, Ribbed Roughened Duct, Turbulent Flow, Unsteady Flow

References

[1] L.B. Wong, W.Q. Tao, Q.W. Wang, T.T. Wong, Experimental Study of Developing Turbulent Flow and Heat Transfer in Ribbed Convergent / Divergent Square Ducts., Int. J. of heat and fluid flow., Vol. 22 p.603 – 613, (2001).

DOI: 10.1016/s0142-727x(01)00127-8