A comparison of two differential Reynolds-stress models for aeronautical flows is presented. The ω model herein combines the Speziale-Sarkar-Gatski pressure-strain model with the Launder-Reece-Rodi model toward the wall, where the length scale is supplied by Menter's baseline ω equation. The [straight epsilon]h model from Jakirlic and Hanjalic has been particularly designed for representing the correct near-wall behavior of turbulence and has been adapted to aeronautical needs. Its length scale is provided by a transport equation for the homogeneous part of the dissipation rate. The models are applied to a series of test cases relevant to aeronautics, showing improved predictions compared to eddy-viscosity models particularly in case of axial vortices. Presented as Paper 2012-465 at the 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, 9-12 January 2012
Differential Reynolds-Stress Modeling for Aeronautics
AIAA journal ; 53 , 3
2015
Aufsatz (Zeitschrift)
Englisch
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