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METHOD OF LINES SOLUTION FOR TRANSIENT TURBULENT FLOW IN A HEATED PIPE

Ahmet B. Uygur
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Tanil Tarhan
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Nevin Selcuk
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

要約

A computational fluid dynamics (CFD) code, based on direct numerical simulation (DNS) and method of lines (MOL) approach previously developed for the prediction of transient turbulent, incompressible, confined non-isothermal flows with constant wall temperature was applied to the prediction of turbulent flow and temperature fields in flows dominated by forced convection in circular tubes with strong heating. The code was parallelized in order to meet the high grid resolutions required by DNS of turbulent flows. Predictive accuracy of the code was assessed by validating its steady state predictions against measurements and numerical results available in the literature. Favorable comparisons obtained reveal that the code provides an efficient algorithm for DNS of nonisothermal turbulent flows.

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