Abstract
Cavitations jet is a kind of continuous jet involved cavitations bubbles, and the impact force is far greater than normal continuous jet. In this paper, the structural characteristics of cavitations jet flow field and the distribution characteristics of the impact pressure are studied by the numerical simulation method, and the effect of inlet pressure on the extent of cavitations is also further analyzed. The results show that: in the flow field, the jet diverges to surrounding when it is near the component, and produces a noticeable cavitations region in this position. The impact pressure in the radial direction shows the Gaussian distribution in the flow field; the impact force on the rigid wall acts in an annular area, and the distribution curve has good self-mold resistance. These results coincide to the experimental results. Furthermore, the effect of inlet pressure on the extent of cavitations exists a certain limit.
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