单流体空化模型在水下爆炸诱导空化问题中的对比分析  

Contrastive analysis of single fluid cavitation models in underwater explosion induced cavitation

作　　者：金泽宇 殷彩玉 孔祥韶[1] JIN Zeyu;YIN Caiyu;KONG Xiangshao(Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,武汉430063 [2]华中科技大学船舶与海洋工程学院,武汉430074

出　　处：《振动与冲击》2023年第23期276-283,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(12202277,11802180);船舶振动噪声重点实验室基金(JCKY2021207CI04);湖北省基金面上项目(2022CFB020)。

摘　　要：在龙格库塔间断伽辽金数值框架下建立了空化截断、修正的Schmidt和等熵空化流三种单流体空化模型。应用于水下冲击波与浮在自由面平板相互作用、水下冲击波与弹性支撑平板相互作用及水下冲击波与水背衬平板相互作用三个实例中;对比分析三种不同空化模型计算获得的流体和结构响应,得到单流体空化模型应用在水下爆炸问题时,饱和蒸汽压、输入载荷强度等因素对不同空化模型计算结果的影响。该结果对应用单流体模型求解水下爆炸问题提供依据。Here,3 single fluid cavitation models of cavitation truncation,modified Schmidt and isentropic cavitation flow were established under Runge-Kutta discontinuous Galerkin numerical framework.These models were applied in 3 examples of interaction between underwater shock waves and plates floating on free surface,interaction between underwater shock waves and elastic support plates and interaction between underwater shock waves and water backed plates.Fluid and structure responses obtained with 3 different cavitation models were analyzed contrastively to obtain effects of saturated vapor pressure,input load strength and other factors on calculation results with different cavitation models during single fluid cavitation models being applied in underwater explosion problems.It was shown that the study results can provide a basis for solving underwater explosion problems with single fluid models.

关 键 词：水下爆炸 流体空化 动力响应 数值分析 

分 类 号：O383.1[理学—流体力学]