科研之友
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摘要
Cavitation was thought for the disagreeable physical phenomenon by its damage effect, noise and hydrodynamic performance. But supercavitation, in which the length of the cavity is longer than that of the object, is studied extensively of the effective drag reduction ability after the show of the VA-111 Shkval (Squall) supercavitating torpedo by Russian. On the surface of the high speed under-water projectile, vapor cavity comes into being by the low pressure. It makes the flow field around the projectile complicated. Cavitation model suggested by Singhal and finite volume method are employed in this paper to study the design for the supercavitation drag reduction. The model is validated by the experiment data by Rouse in large cavitation number. In this paper, the general conclusion is pointed out for the supercavitation drag reduction by the numerical and experiment results. Considering the importance of the cavitor for supercavitation drag reduction, several new types of cavitors are put forward and investigated by numerical method in present paper. All of them are important for the design in supercavitation drag reduction.
- 出版日期2006
- 单位哈尔滨工程大学
