Open AccessExperience in DNS of turbulent free convection in air along an isothermal vertical plate
Author(s) -
Е. М. Смирнов,
Alexander M. Levchenya,
Nikolay Ivanov,
A. A. Smirnovsky,
Pavel E. Smirnov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1675/1/012077
Subject(s) - grashof number , natural convection , turbulence , boundary layer , mechanics , transition point , isothermal process , combined forced and natural convection , convection , physics , meteorology , thermodynamics , materials science , reynolds number , nusselt number
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, Gr x , of 8.10 10 (Pr=0.7). A span-distributed macro-roughness of a selected form is used for enhancing transition to turbulence, so that the Gr x –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).