液体可压缩性对超空化流动的影响
发布时间：2018-08-23 21:13
【摘要】：基于多相流模型和运动框架模型构建可压缩超空化流场的数值计算模型,分别使用具有不同物性的流体介质模拟水下跨声速超空化流动,并将数值模拟结果与经验公式结果相互参验,通过对比分析研究在液体可压缩性对跨声速超空化流动的影响.研究结果显示:液体可压缩性对流动参数的分布规律、空化物体的阻力特性和流场的空化情况均有显著影响;考虑液体可压缩性,随飞行速度的增大,射弹的阻力系数将增加,并且在高速工况下超空泡的尺度大幅度减小;可压缩超空化流场中,较300m/s工况,速度为1 900m/s时弹体阻力系数增大约22%,弹尾截面空泡直径减小约30%.
[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.
【作者单位】： 西北工业大学航海学院;
【基金】：国家自然科学基金项目(51409215,51579209)资助
【分类号】：O35
本文编号：2199936
[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.
【作者单位】： 西北工业大学航海学院;
【基金】：国家自然科学基金项目(51409215,51579209)资助
【分类号】：O35
【相似文献】
相关期刊论文 前9条
1 王国玉,曹树良,刘淑艳,刘臣亚;绕水翼超空化现象的实验研究[J];工程热物理学报;2003年04期
2 张纪华;张宇文;邬明;张博;;二维水翼超空化状态下流体动力特性数值仿真[J];计算机仿真;2010年02期
3 时素果;王国玉;权晓波;余志毅;;当地均相介质模型在通气超空化流动计算中的应用[J];兵工学报;2011年02期
4 汤继斌,钟诚文;空化、超空化流动的数值模拟方法研究[J];力学学报;2005年05期
5 李向宾;王国玉;张敏弟;;绕水翼超空化阶段汽液混合体动态特性的实验观测[J];实验流体力学;2012年01期
6 段磊;王国玉;付细能;;绕圆头回转体通气超空化流动的实验研究[J];兵工学报;2014年04期
7 杨武刚;杨振才;温凯歌;李三财;张宇文;;超空化航行体气体流量率的确定方法研究[J];力学学报;2012年04期
8 张博;张宇文;袁绪龙;张纪华;;超空化流场中通气位置的CFD数值计算与研究[J];机床与液压;2009年10期
9 ;[J];;年期
，本文编号：2199936
本文链接：https://www.wllwen.com/kejilunwen/lxlw/2199936.html
