Large eddy simulation of oscillatory boundary layer at Red=3500
The oscillatory boundary layer at Reynolds number of 3500 over an oscillating wall is simulated by the method of large-eddy simulation (LES). The Reynolds number is chosen as Reδ=3500 in according with one of the wellknown experimental cases (Test No. 10, Ref. 3). The simulation presents the first- and second-order statistics of the oscillatory boundary layers, which are in good agreement with the experimental data. By investigating of the existence of the logarithmic layer in the velocity profiles, the fully developed turbulence state is identified; During half a cycle (90°-270°), the logarithmic layer starts to appear at about 110°,and lasts till 250° in the current simulation. The evolutions of the turbulent energy spectra are also illustrated.
Oscillatory boundary layer LES turbulent spectra coherent structure
Qiang Zhang
School of Aerospace Engineering,Beijing Institute of Technology Beijing,china
国际会议
9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)
上海
英文
160-165
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）