Analysis On Collapsing For Hemispherical Cavitation Bubble To Wall And Simulation For Solid Of Rotation Rushing Out Of Water

Up to now, the positive and negative effects brought by cavitation effect become bigger and bigger, which cause the attention of scholars. With the progress of science and technology, the field it involves becoming more and more, such as high speed propeller, the torpedo ray body, the submarine, water pump, water turbine, etc. However, at present, the cavitation mechanism research has not been very clear, how to grasp the cavitation technique is to present problems. This topic build a reasonable cavitation geometry model and establish related analysis of numerical equation, to simulate the simulation of axially symmetrical high-speed bursting from the surface, analyze pressure field changes and fluid movement characteristics around the axially symmetrical.After analyzing cavitation phenomenon cavitation mechanism and related solutions, this topic introduces the cavitation related problems at home and abroad present situation of the study, expound the feasibility and necessity of collapsing for hemispherical cavitation bubbles to wall. Suppose the form of existence and collapsing way of cavitation bubbles in the process of when axially symmetrical contact the water and rush out of the water completely, build geometric model, in the mean time, establish cavitation bubbles collapsing pressure and speed numerical equation, analyze and calculate to get numerical results.Simulate the simulation of the process of axially symmetrical high-speed rushing out of the water by FLUENT software. Make analysis modeling for axially symmetrical and around fluid, Provisions fluid domain and axially symmetrical movement line, mesh division the fluid axially symmetrical and around fluid, analyze and calculate of the relevant sports characteristics of axially symmetrical stress field and fluid around, especially speed distribution.In conclusion, this topic mainly has analyzed and calculated the cavitation effect of collapsing for hemispherical cavitation bubbles to wall and got ideal data results. Has simulated the simulation of axially symmetrical high-speed rushing out of the water, has clearly described pressure field changes around axially symmetrical and related movement characteristic, the result of simulation for solid of rotation rushing out of water is ideal.