| 水下喷气推进高速射流场数值研究 |
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| 引用本文： | 郝宗睿,王乐勤,吴大转.水下喷气推进高速射流场数值研究[J].浙江大学学报(自然科学版 ),2010,44(2):408-412. |
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| 作者姓名： | 郝宗睿 王乐勤 吴大转 |
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| 作者单位： | （浙江大学 化工机械研究所,浙江 杭州 310027） |
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| 基金项目： | 教育部高校博士点基金资助项目（20070335006）. |
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| 摘 要： | 为建立航行体点火初期尾部流场结构的预测方法,并揭示水下燃气喷射非定常流场与推进航行体运动的相互关系,以简化的潜射火箭为研究模型,采用流体体积法（VOF）两相流模型结合动网格方法对系留状态和运动状态下的燃气喷射流场进行数值模拟,分析了两种状态下燃气喷射形成的复杂流场结构.结果显示,喷气推进航行体在水下发射时,喷口附近形成复杂的流动结构和演化过程,并伴有较大的压力脉动产生；航行体加速运动导致的边界变化对燃气喷射流场产生较大的影响.
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| 关 键 词： | 燃气射流 水下航行体 流体体积法（VOF） 动网格方法 数值模拟 |
Numerical simulation of high-speed jet flow field of underwater jet propulsion craft |
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| HAO Zong-rui,WANG Le-qin,WU Da-zhuan.Numerical simulation of high-speed jet flow field of underwater jet propulsion craft[J].Journal of Zhejiang University(Engineering Science),2010,44(2):408-412. |
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| Authors: | HAO Zong-rui WANG Le-qin WU Da-zhuan |
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| Affiliation: | (Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China) |
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| Abstract: | A simplified model of submarine-launched rocket was built to establish a method for predicting initial tail flow of submarine-launched craft and revealing the relationship between unstable flow field and movement of the craft. The volume of fluid （VOF） multiphase flow model and dynamic mesh method were adopted to simulate the flow field in moorage state and movement state. The configuration of jet flow field under two different states was analyzed. Results show that the formation and the evolution process of the complex flow are accompanied by great pressure pulsation as jet propulsion craft launching. Boundary change caused by accelerating craft has great influence on the gas injection flow. |
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| Keywords: | gas jet flow submarine-launched craft volume of fluid (VOF) dynamic mesh method numerical simulation |
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