TY - JOUR
T1 - A highly-resolved numerical study of turbulent separated flow past a backward-facing step
AU - Thangam, S.
AU - Hur, N.
PY - 1991
Y1 - 1991
N2 - A numerical study of fully-developed turbulent flow past a backward-facing step is performed to analyze the effect of mesh refinement on the computed results. The time averaged equations of conservation of mass and momentum are solved by a finite-volume method using two versions of the K-ε model of turbulence. The computations are performed with both the standard and the non-linear K-ε turbulence models for 166 × 73 and 332 × 146 mesh points. The comparison of the results with available experimental findings indicate that nonlinear terms must be incorporated into the K-ε model to account for normal stress differences, and that even with very fine resolution, the standard K-ε model fails to provide accurate predictions of the flow field.
AB - A numerical study of fully-developed turbulent flow past a backward-facing step is performed to analyze the effect of mesh refinement on the computed results. The time averaged equations of conservation of mass and momentum are solved by a finite-volume method using two versions of the K-ε model of turbulence. The computations are performed with both the standard and the non-linear K-ε turbulence models for 166 × 73 and 332 × 146 mesh points. The comparison of the results with available experimental findings indicate that nonlinear terms must be incorporated into the K-ε model to account for normal stress differences, and that even with very fine resolution, the standard K-ε model fails to provide accurate predictions of the flow field.
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U2 - 10.1016/0020-7225(91)90065-B
DO - 10.1016/0020-7225(91)90065-B
M3 - Article
AN - SCOPUS:0025720252
SN - 0020-7225
VL - 29
SP - 607
EP - 615
JO - International Journal of Engineering Science
JF - International Journal of Engineering Science
IS - 5
ER -