The Research On Fluid And Solid Interaction Vibration Of Fixed Cone Valve

The technology of fluid field analysis on Fluid machinery has been state of art, while the importance of dynamic property increasingly when the high frequency of the accident. Especially the development way of great dimension and capacity, where upon the fall of nature frequency, more contiguous with pulsation frequency, so the problem of stability on fluid machinery has been very practical. Fluid and solid interaction vibration of hollow jet valve is the key point in this paper, the problem of FSI has been discussed and discover, some practical study method and conclusion come out.From the field applying of fixed cone valve, the resonance probability of fixed cone valve was analyzed, reference and accordance was provided. Followed the finite element method and FEM based finite volume method, the theoretic knowledge had investigated, with the latest algorism domestic and abroad, we gave the advanced on the FSI. The main method of FSI and the mathematic way was introduced. The modal in the air of fixed cone valve was first given in the paper, and then with the CFD, the data was transferred to modal to solve the modal in the water. An important conclusion was given, the nature frequency declined clearly. Fiexed cone valve mady by model, and we test the frequency and amplitude with different opening, then the data was tranlationed by similar principle. The conclusion is the fixed cone valve would not resonance, a new method was given by fluid solid interaction. We provided a structure optimization after the applying expierence and numerical simulation, the fixed cone valve running steady.We get a whole program and method on anayling the dynamic characteristic of fixed cone valve, and they also canbe applying independent, it can be used in the vibration and fluid field as well as the optimization. Some harvests have applying in some hydraulic power station.