Predicting Turbulent Flow and Heat Transfer in

Masoud Rokni, T.B. Gatski

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

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Abstract

The performance of an explicit algebraic stress model is assessed in predicting the turbulent flow and forced heat transfer in straight ducts, with square, rectangular, trapezoidal and triangular crosssections, under fully developed conditions over a range of Reynolds numbers. Iso-thermal conditions are imposed on the duct walls and the turbulent heat fluxes are modeled by gradient-diffusion type models. At high Reynolds numbers (>105), wall functions are used for the velocity and temperature fields; while at low Reynolds numbers damping functions are introduced into the models. Hydraulic parameters such as friction factor and Nusselt number are well predicted even when damping functions are used, and the present formulation imposes minimal demand on the number of grid points without any convergence or stability problems.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Turbulence, Heat and Mass Transfer
Number of pages8
Publication date2000
Publication statusPublished - 2000
Externally publishedYes
Event3rd International Symposium on Turbulence, Heat and Mass Transfer - Nagoya, Japan
Duration: 2 Apr 200027 Apr 2000

Conference

Conference3rd International Symposium on Turbulence, Heat and Mass Transfer
CountryJapan
CityNagoya
Period02/04/200027/04/2000

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