Effect of wall heating on flow-induced structure vibration noise of an underwater wing structure

Abstract This paper investigates the control effect of wall heating on turbulent pressure fluctuations and flow-induced structure vibration noise in a wing structures through numerical calculations. The control mechanism of wall heating is examined through turbulent kinetic energy distribution, the flow separation location, and the three-dimensional vortex structure. The flow and sound fields are solved employing the large-eddy simulation (LES) method and a hybrid numerical method, respectively. Numerical calculation results show that wall heating delays the flow separation and shortens the development distance before separation vortex shedding, bringing about a decrease in wall pressure fluctuations and radiated sound power. This study demonstrates that wall heating effectively controls flow-induced structure vibration noise by reducing the viscosity of water.