Abstract

Turbulent transport computations of a scalar quantity for fully developed turbulent pipe flow with uniform surface heat flux were carried out by means of a direct numerical simulation (DNS) procedure. The number of computational grids used in this paper is 256×128×128. Prandtl number of the working fluid is 0.71. The Nusselt number is in good agreement with the empirical correlation. The scalar variance and scalar flux obtained by the present DNS are in very good agreement with the previous experimental data. The present DNS results can be used as a reference data base.

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