Wall-modeled Large Eddy Simulation for Wall-pressure Fluctuations around SUBOFF
Wall-modeled large eddy simulation is used to study wall-pressure fluctuations in turbulent boundary layer around an axisymmetric body of SUBOFF.Large eddy simulation is applied to solve the flow in the outer region and outside the boundary layer,while the inner-layer flow is modeled with wall-stress model.Numerical results of time-averaged pressure and skin-friction coefficients are agreed well with the experimental data.Spectrum analysis is adopted to get the self-power spectral of wall-pressure fluctuations.The characteristics of self-power spectrum of wall pressure fluctuations in different positions on the mid-body are analyzed and discussed.The self-power spectrum of wall pressure fluctuations deceases as the frequency increases.Because the turbulent flow is fully developed on the mid-body,the self-power spectrums of wall pressure fluctuations at different positions are similar.
turbulent boundary layerwall-pressure fluctuationswall-modeled large eddy simulationSUBOFF
NETL
NSTL
万方数据
