Abstract
Pseudo direct numerical simulation applying the finite difference method is performed on a fully-developed turbulent flow through parallel flat walls heated by uniform flux. The study is aimed at examining the influence brought to the turbulent field calculation by differences in the level of spatial resolution obtainable in the streamwise and spanwise directions. All in all, satisfactory results are obtained for the mean profiles and second-order moments of velocity and temperature, as well as on the Nusselt number of various flows presenting-various Prandtl numbers. Differences in the level of spatial resolution prove to affect little the accuracy of calculated results.
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