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空化模型中的相关参数对非定常空化流动计算的影响

发表时间:2010-07-31  浏览量:1623  下载量:756
全部作者: 黄彪,王国玉,袁海涛
作者单位: 北京理工大学机械与车辆工程学院
摘 要: 采用商业软件中的用户自定义函数(user�defined functions,UDF)方法,对非定常空化流动现象进行相应的数值模拟,并着重讨论空化模型中典型物理参量(空泡半径、含气率)对计算结果的影响。结果表明:在空化模型中,空泡半径与不溶性气核的质量分数等空化模型参数对计算结果有重要影响。当空泡半径取常量时,随着空泡半径的减小,计算得到的最大空穴长度和空穴内的含气量均增加;非凝结气泡分数不会改变翼型动力特性的特征频率。
关 键 词: 多相流动;空化模型;空穴形态;动力特性;频率
Title: Analysis of the influence of experience constants in cavitation models on cavitation flow computations
Author: HUANG Biao, WANG Guoyu, YUAN Haitao
Organization: School of Mechanical and Vehicular Engineering, Beijing Institute of Technology
Abstract: To investigate the influence of experience constants in cavitation model, the unsteady cavitation flow around the Clark�y foil was numerically simulated with different experience constants. It is shown that the diameter of cavitation bubble has a significant impact on the shapes of cavity; the cavity area seems larger when the diameter of cavitation bubble is bigger, and also, the mass fraction of non�condensation gas has no significant effect on the frequency distribution of the dynamics.
Key words: multiphase flow; cavitation model; cavity shape; dynamics characteristic; frequency
发表期数: 2010年7月第14期
引用格式: 黄彪,王国玉,袁海涛. 空化模型中的相关参数对非定常空化流动计算的影响[J]. 中国科技论文在线精品论文,2010,3(14):1430-1435.
 
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