Experience in DNS of turbulent free convection in air along an isothermal vertical plate

The paper presents results of direct numerical simulation of the turbulent free convection boundary layer developing along a vertical heated plate up to the local Grashof numbers, Grx, of 8.1010 (Pr=0.7). A span-distributed macro-roughness of a selected form is used for enhancing transition to turbu...

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Published inJournal of physics. Conference series Vol. 1675; no. 1; pp. 12077 - 12081
Main Authors Smirnov, E M, Levchenya, A M, Ivanov, N G, Smirnovsky, A A, Smirnov, P E
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2020
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Summary:The paper presents results of direct numerical simulation of the turbulent free convection boundary layer developing along a vertical heated plate up to the local Grashof numbers, Grx, of 8.1010 (Pr=0.7). A span-distributed macro-roughness of a selected form is used for enhancing transition to turbulence, so that the Grx-value corresponding to the end point of transition would be close to that reported for the case of natural transition. The results obtained for the first-and the second-order turbulent flow and heat transfer statistics in the developed turbulent regime are in a good accordance with the experimental data reported by Tsuji and Nagano (1988).
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1675/1/012077