Response of an elastic plate to turbulent boundary layer wall-pressure fluctuations

Understanding the excitation of elastic structures by wall pressure fluctuations from turbulent boundary layers is essential to investigate the radiated far-field sound. The response of an elastic plate to wall-pressure fluctuations is computed in the time domain using an in-house parallel unsteady finite element structural solver, and one-way coupled FSI simulations. The wall-pressure fluctuations are generated from DNS of turbulent channel flow at Re_τ = 180, 400 and 590. The nature of pressure fluctuations, response of the elastic plate and their coupling are investigated and compared. The resulting far-field acoustic radiation due to the plate vibration is discussed.