潜射导弹表面空化特性研究

Research on Cavitation of Submarine Launched Missile's Surface

潜射导弹水下高速运动时,弹体表面的空化现象对导弹的力学环境有重要影响。阐述了空化产生的机理,并通过数值模拟研究了空化流动的流场结构,分析了空化数及非凝结性气体含量对空化流动的影响。研究结果表明:空化数越小,水中非凝结性性气体含量越多,弹体表面空化就越剧烈,空化对导弹所受水动力的影响也越大。

Cavitation on the missile's surface has great effect on mechanical environment of submarine launched missile moving with a high speed underwater.In this paper,the mechanism of cavitation flow was given.According to numerical simulation,the cavitation flow structure was obtained.The effect of cavitation number and non-condensable gases mass fraction on cavitation flows was analysed.The research conclusions indicate that cavitation on the missile's surface is more tempestuous with smaller cavitation number an...