| 基于汽相/液相界面跟踪方法的弯管内空化流动的数值预测 |
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| 引用本文： | 李军,刘立军,李国君,丰镇平.基于汽相/液相界面跟踪方法的弯管内空化流动的数值预测[J].工程热物理学报,2008,29(12). |
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| 作者姓名： | 李军 刘立军 李国君 丰镇平 |
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| 作者单位： | 西安交通大学能源与动力工程学院,陕西,西安,710049 |
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| 基金项目： | 高等学校博士学科点专项科研基金 |
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| 摘 要： | 采用发展的基于Reynolds-Averaged Navier-Stokes方程和液相/气相界面跟踪方法的单相空化模型和数值迭代算法,数值预测了二维弯管内空化卒泡的形状和相应的压力系数分布.将发展的二维空化模型和算法推广到i维空化流动的数值模拟,预测了三维非对称弯管内的三维空泡形状和流动特性.数值预测三维非对称弯管内空化流动时的卒泡位置和相应压力系数分布符合理论分析结论.研究结果证明了所发展的空化模型和算法能够应用于三维空化流动时的数值预测.
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| 关 键 词： | 弯管 空化 液相/气相界面跟踪方法 数值预测 |
NUMERICAL PREDICTION OF CAVITATION FLOWS IN BEND PIPES USING VAPOR/LIQUID INTERFACE TRACKING METHOD |
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| LI Jun,LIU Li-Jun,LI Guo-Jun,FENG Zhen-Ping.NUMERICAL PREDICTION OF CAVITATION FLOWS IN BEND PIPES USING VAPOR/LIQUID INTERFACE TRACKING METHOD[J].Journal of Engineering Thermophysics,2008,29(12). |
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| Authors: | LI Jun LIU Li-Jun LI Guo-Jun FENG Zhen-Ping |
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| Institution: | LI Jun LIU Li-Jun LI Guo-Jun FENG Zhen-Ping (School of Energy & Power Engineering,Xi\'an Jiaotong University,Xi\'an 710049,China) |
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| Abstract: | The cavitation bubble and corresponding pressure coefficient distribution in the two di- mensional bend pipe under cavitating flow were numerically predicted using development of the liq- uid/vapor interface tracking method and Reynolds-Averaged Navier-Stokes solution.The vapor/liquid interface is treated as a free boundary and its shape is determined using an iterative procedure to match the cavity surface to a constant pressure boundary.The pressure distribution,as well as its gradi- ent on the wall,was t... |
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| Keywords: | bend pipe cavitation vapor/liquid interface tracking method numerical prediction |
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