| 深海环境下射流性能仿真 |
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| 引用本文： | 周玉军,黄中华,刘少军,邹学莉.深海环境下射流性能仿真[J].现代制造工程,2010(1). |
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| 作者姓名： | 周玉军 黄中华 刘少军 邹学莉 |
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| 作者单位： | 中南大学机电工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 建立适用于深海作业的高压射流喷嘴的流体动力学仿真模型,对深海环境下喷嘴射流的内、外部流场性能进行数值仿真分析,得到5MPa、10MPa和15MPa三种典型围压环境下喷嘴内部射流压力和速度的变化规律及射流离开喷嘴后的压力和速度变化规律,并与非淹没状态下射流的性能进行对比研究。研究结果表明:通过数值仿真可以获得深海环境下喷嘴射流的工作性能,仿真结果与理论计算结果吻合;随着海水围压的增加,喷嘴射流出口的最大速度相应下降;当喷嘴射流出口喷射速度一定时,深海围压的大小对射流性能基本没有影响;不同围压下的射流形成的等速核外形和靶距基本相同,深海最优作业喷距为3~5倍喷嘴出口直径;与非淹没环境相比,淹没状态下射流沿轴向速度衰减梯度变化迅速,其等速核长度缩短约40%。
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| 关 键 词： | 喷嘴 射流 性能仿真 深海 |
Performance simulation of jet in deep-sea environment |
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| ZHOU Yu-jun,HUANG Zhong-hua,LIU Shao-jun,ZOU Xue-li.Performance simulation of jet in deep-sea environment[J].Modern Manufacturing Engineering,2010(1). |
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| Authors: | ZHOU Yu-jun HUANG Zhong-hua LIU Shao-jun ZOU Xue-li |
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| Affiliation: | ZHOU Yu-jun,HUANG Zhong-hua,LIU Shao-jun,ZOU Xue-li (College of Mechanical , Electrical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The fluid dynamics simulation model of high-pressure jet nozzle which is adequate for deep-sea work is established.The performance of jet nozzle's internal and external flow field is numerically simulated and analyzed in deep-sea environment,the changes of jet's pressure and velocity which are in and after leaving from the nozzle in three typical confining pressure environments as 5MPa,10MPa and 15MPa are obtained,and then,it is comparatively studied with the performance of jet in non-submerged condition.Th... |
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| Keywords: | nozzle water jet performance simulation deep-sea |
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