摘要
基于结构化网格,运用N-S方程及k-ε湍流方程对均质流场求解,引入修正的Rayleigh-Plesset方程模拟空泡问题。对三维圆盘空化器在不同空化数下进行超空化流动数值模拟,将仿真结果与经验公式进行对比,二者具有良好的一致性。并且解决了带攻角圆盘空化器生成超空泡的数值模拟问题,详细分析了带攻角圆盘空化器生成超空泡的形态特征,总结了带攻角圆盘空化器与无攻角圆盘空化器的优缺点,为优化超空泡形态,实现高效减阻提供了参考依据。
The homogeneous flow field was solved by N-S equations and k-ε turbulence equations and the supercavity was simulated by modified Rayleigh-Plesset equation based on the structured mesh. The supercavity flow of the three dimensional disk-cavitator was numerically simulated under different cavitation numbers. The research shows that the simulation result of full three-dimensional disk-cavitator is consistent with the empirical formulas. The problem of numerical simulation on the supercavity induced by disk-cavitator with attack angle was solved. The shape feature of the supercavity mentioned above was analyzed in detail. The advantage and disadvantage of disk-cavitators with and without attack angle were summarized. The study provides the basis for shape optimization of supercavity and drag reduction.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2008年第1期78-84,共7页
Acta Armamentarii
基金
黑龙江省自然科学基金重点项目(ZJG03-1)
关键词
流体力学
三维
超空化
空化器
数值模拟
空泡形态
hydromechanics
three dimensions
supercavity
cavitator
numerical simulation
shape of cavity
