| 空化模型中的相变系数影响研究 |
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| 引用本文： | 王柏秋, 王聪, 黄海龙, 何春涛, 张嘉钟. 空化模型中的相变系数影响研究[J]. 工程力学, 2012, 29(8): 378-384. DOI: 10.6052/j.issn.1000-4750.2011.09.0592 |
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| 作者姓名： | 王柏秋 王聪 黄海龙 何春涛 张嘉钟 |
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| 作者单位： | 1.哈尔滨工业大学航天学院,哈尔滨 150001;;2.北京宇航系统工程研究所,北京 100076;;3.哈尔滨工业大学土木学院,哈尔滨 150090 |
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| 基金项目： | 国家自然科学基金项目(51149003);中央高校基本科研业务费专项资金项目(HIT.NSRIF.2013033) |
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| 摘 要： | 利用数值计算的方法,对空化模型中的相变系数进行研究.将数值计算和实验数据进行分析和整理,分别获得蒸发系数和冷凝系数与空化数之间的依赖关系.通过比较半球头圆柱体的二维轴对称模型数值计算结果表明:不同空化数对应着不同相变系数.其中,蒸发系数和冷凝系数分别对主空泡、次生空泡、尾空泡等类型的空泡在形态、溃灭位置、溃灭强度等方面有较大影响.
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| 关 键 词： | 空化模型 相变 蒸发系数 冷凝系数 空化 |
| 收稿时间： | 2011-09-08 |
| 修稿时间： | 2011-11-13 |
STUDY OF THE INFLUENCE OF PHASE-CHANGE COEFFICIENTS IN THE CAVITATION MODEL |
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| WANG Bai-qiu, WANG Cong, HUANG Hai-long, HE Chun-tao, ZHANG Jia-zhong. STUDY OF THE INFLUENCE OF PHASE-CHANGE COEFFICIENTS IN THE CAVITATION MODEL[J]. Engineering Mechanics, 2012, 29(8): 378-384. DOI: 10.6052/j.issn.1000-4750.2011.09.0592 |
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| Authors: | WANG Bai-qiu WANG Cong HUANG Hai-long HE Chun-tao ZHANG Jia-zhong |
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| Affiliation: | 1.School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;;2.Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China;;3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | The influence of phase-change coefficients in a cavitation model was studied using a numerical method. By comparing the numerical results and experimental data, the relationships of evaporation coefficients & cavitation number and condensation coefficients & cavitation number are obtained. The results of a 2D axisymmetric hemispherical cylinder under different cavitation numbers show that: different cavitation numbers are corresponding to different phase-change coefficients, and variations of the coefficients of evaporation and condensation have a great influence respectively on the main cavity, secondary cavity, rear cavity, and other types of cavity in cavity shape, collapse position, collapse strength, and so on. |
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| Keywords: | cavitation model phase change evaporation coefficients condensation coefficients cavitation |
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