液體可壓縮性對(duì)超空化流動(dòng)的影響
[Abstract]:Based on the multiphase flow model and the moving frame model, the compressible supercavitation flow model is constructed, and the underwater transonic supercavitation flow is simulated by using different physical fluid media, respectively. The effects of compressibility of liquid on transonic supercavitation flow are studied by comparing the results of numerical simulation and empirical formula. The results show that the compressibility of liquid has a significant effect on the distribution of flow parameters, the resistance characteristics of cavitation objects and the cavitation of flow field, and considering the compressibility of liquid, the drag coefficient of projectile will increase with the increase of flight velocity. In the compressible supercavitation flow field, when the velocity is 1 900m/s, the drag coefficient of the projectile increases by 22 and the cavitation diameter of the tail section decreases by about 30.
【作者單位】: 西北工業(yè)大學(xué)航海學(xué)院;
【基金】:國家自然科學(xué)基金項(xiàng)目(51409215,51579209)資助
【分類號(hào)】:O35
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