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http://dx.doi.org/10.20910/JASE.2019.13.6.1

Synthetic Turbulence Effect in Subsonic Backward Facing Step Flow Using LES  

Ahn, Sang-Hoon (Department of Aerospace Engineering, Korea Aerospace University)
Sung, Hong-Gye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.13, no.6, 2019 , pp. 1-8 More about this Journal
Abstract
The synthetic turbulence generation model for inlet boundary conditions of subsonic Backward Facing Step (BFS) was investigated. The average u-velocity and Reynolds stress at inlet boundary follows experimental data. Synthetic Eddy Method (SEM), random noise, and uniform flow conditions were implemented relative to the synthetic turbulence generation method. A three dimensional Large Eddy Simulation (LES) was applied for turbulent flow simulation. Turbulent and mean flow characteristics such as flow reattachment length, velocity profiles, and Reynolds stress profiles of BFS were compared with respect to the turbulent effects.
Keywords
Synthetic Eddy Method(SEM); Large Eddy Simulation(LES); Backward Facing Step(BFS);
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