Numerical and Experimental Comparative Study on the Flow-Induced Vibration of a Plane Gate

Water

Shihua He¹  Yimin Xu¹  Wei Wang²  Chunying Shen² 

[1] Faculty of Electrical Power Engineering, Kunming University of Science and Technology, Kunming 650500, China;State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China;

关键词: LES-VOF method;    flow-induced vibration;    plane gate;    numerical analysis;   

DOI  :  10.3390/w10111551

来源: DOAJ

【 摘 要 】

A numerical method is applied here to simulate the unstable flow and the vibration of a plane gate. A combination of the large eddy simulation (LES) method and the volume of fluid (VOF) model is used to predict the three-dimensional flow field in the vicinity of a plane gate with submerged discharge. The water surface profile, the streamline diagrams, the distribution of turbulent kinetic energy, the power spectrum density curve of the fluctuating pressure coefficient at typical points underneath the gate, and the complete vortex distribution around the gate are obtained by LES-VOF numerical calculation. The vibration parameters of the gate are calculated by the fluid-structure coupling interface transferring the hydrodynamic load. A simultaneous sampling experiment is performed to verify the validity of the algorithm. The calculated results are then compared with experimental data. The difference between the two is acceptable and the conclusions are consistent. In addition, the influence of the vortex in the slot on the flow field and the vibration of the gate are investigated. It is feasible to replace the experiment with the fluid-structure coupling computational method, which is useful for studying the flow-induced vibration mechanism of plane gates.

【 授权许可】

Unknown