摘要
The effect of a guide vane installed at the elbow on flow-induced noise and vibration is investigated in the range of Reynolds numbers from 1.70×10^5 to 6.81×10^5, and the position of guide vane is determined by publications. The turbulent flow in the piping elbow is simulated with large eddy simulation （LES）. Following this, a hybrid method of combining LES and Lighthill＇s acoustic analogy theory is used to simulate the hydrodynamic noise and sound sources are solved as volume sources in code Actran. In addition, the flow-induced vibration of the piping elbow is investigated based on a fluid-structure interaction （FSI） code. The LES results indicate that the range of vortex zone in the elbow without the guide vane is larger than the case with the guide vane, and the guide vane is effective in reducing flow-induced noise and vibration in the 90° piping elbow at different Reynolds numbers.
基金
Supported by the Independent Innovation Foundation for National Defense of Huazhong University of Science and Technology(No.01-18-140019)
作者简介
Tao Zhang is presently an associate professor at School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology. He is also a researcher in the Hubei Key Laboratory of Naval Architecture and Ocean Engineering Hydrodynamics. He is the author or coauthor of more than 50 scientific publications. His research interests include fluid structure interaction, flow-induced noise, flow-induced vibration, LES, FEM, underwater acoustic and hydrodynamics.Huajiang Ouyang is a professor at School of Engineering, University of Liverpool. He is also an editor of several journals, including Journal of Sound and Vibration, and he is the author or coauthor of more than 150 scientific publications. His main research interests include structural dynamics （parametric and nonlinear vibration, aeroelasticity） and computational mechanics （modelling and simulation）. Professor Ouyang is also a research fellow of the Royal Academy of Engineering.
