Shear layer adapted sub-grid length scale is applied in Improved Delayed Detached Eddy Simulation with SST background RANS model (SSTIDDES). The objective is to ease the “grey area” through dramatically decreasing the eddy viscosity in the initial region of a free shear layer. Two test cases including a near-sonic jet and a backward-facing step flow are tested to show the advantage of the new solution-dependent definition of sub-grid length scale over the original one in unlocking the Kelvin-Helmholtz (K-H) instability in the free shear layer
Application of shear layer adapted sub-grid length scale in SST-IDDES / Xiao, M.. - (2018). (Intervento presentato al convegno Tenth International Conference on Computational Fluid Dynamics (ICCFD10) tenutosi a Barcelona, Spain).
Application of shear layer adapted sub-grid length scale in SST-IDDES
M. Xiao
2018
Abstract
Shear layer adapted sub-grid length scale is applied in Improved Delayed Detached Eddy Simulation with SST background RANS model (SSTIDDES). The objective is to ease the “grey area” through dramatically decreasing the eddy viscosity in the initial region of a free shear layer. Two test cases including a near-sonic jet and a backward-facing step flow are tested to show the advantage of the new solution-dependent definition of sub-grid length scale over the original one in unlocking the Kelvin-Helmholtz (K-H) instability in the free shear layer| File | Dimensione | Formato | |
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