作　　者： ; ; ; ; (于远洋）;

机构地区： 东北石油大学

出　　处： 《管道技术与设备》 2013年第1期10-12,共3页

摘　　要： 针对文丘里管的水力空化现象,采用FLUENT软件进行数值模拟,通过模拟不同入口压力下文丘里管的空化现象,分析出湍动能和汽含率的分布情况,再模拟不同喉部直径和不同扩散段长度对于水力空化现象的影响。结果证明:出口压力一定时,增大入口压力可增强空化效果,且下游恢复压力越小;喉部直径越小,空化效应越强烈;并且增加扩散段长度可以强化空化现象。以上研究对于工程实际均具有重要的意义和作用。 For the hydraulic cavitation of Ventufi tubes, numerical simulations are conducted by using FLUENT software, and by simulating different pressures below venturi cavitation, an analysis is made of the turbulent kinetic energy and the distribution of vapor bubble fraction. Then, different throat diameters and lengths are simulated for different diffusion hydrodynamic cavitation phenomena. Resuhs show that when the outlet pressure is constant, increasing the inlet pressure can help improve the cavitation effect. The smaller the downstream pressure of recovery and the smaller throat diameter, the more intense the cavitation effect will be. besides, to increase the diffusion length can enhance cavitation. The research mentioned above is of important practical engi neering significance and role.

关 键 词： 水力空化 文丘里管 数值模拟

领　　域： [石油与天然气工程]