TY - GEN
T1 - Numerical Simulation of Separated and Reattached Flows around a Backward-Facing Step
AU - Li, Yinsong
AU - Zheng, Chaorong
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/9/11
Y1 - 2015/9/11
N2 - Separated and reattached flows around a backward-facing step (BFS) controlled by continuous suction was numerically investigated using the turbulence model of large eddy simulation (LES) based on the dynamic kinetic energy sub grid-scale model. The effect of suction control on the flow fields was described by the suction flow coefficient, and the results indicate that suction is not only very effective in shortening the reattachment length, but also very influential in reducing the turbulence fluctuations of the reattached flows. With increasing increments of the absolute suction flow coefficient, the effect of suction control is more significant. Furthermore, comparisons of the time-averaged statistics between the numerical simulation and corresponding experiment are conducted, and it shows that the LES can acquire exact results. Therefore, feasibility of the numerical methods to simulate suction-controlled models is validated.
AB - Separated and reattached flows around a backward-facing step (BFS) controlled by continuous suction was numerically investigated using the turbulence model of large eddy simulation (LES) based on the dynamic kinetic energy sub grid-scale model. The effect of suction control on the flow fields was described by the suction flow coefficient, and the results indicate that suction is not only very effective in shortening the reattachment length, but also very influential in reducing the turbulence fluctuations of the reattached flows. With increasing increments of the absolute suction flow coefficient, the effect of suction control is more significant. Furthermore, comparisons of the time-averaged statistics between the numerical simulation and corresponding experiment are conducted, and it shows that the LES can acquire exact results. Therefore, feasibility of the numerical methods to simulate suction-controlled models is validated.
KW - Backward-facing step
KW - flow control
KW - large eddy simulation
KW - reattachment length
KW - suction
UR - https://www.scopus.com/pages/publications/84960119696
U2 - 10.1109/ICMTMA.2015.176
DO - 10.1109/ICMTMA.2015.176
M3 - 会议稿件
AN - SCOPUS:84960119696
T3 - Proceedings - 2015 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015
SP - 708
EP - 711
BT - Proceedings - 2015 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2015
Y2 - 13 June 2015 through 14 June 2015
ER -