The frequency spectrum of turbulent wall pressure fluctuations: comparison of simulations with experiments

The frequency spectrum of the wall pressure fluctuations obtained from a direct simulation of turbulent flow in a rectangular channel is compared with results from boundary layer experiments. The computed spectrum exhibits ω −1 dependence in a middle frequency range and ω −3·5 dependence at high frequencies. The computed results give good agreement with low Reynolds number experimental results when inner scaling is used.