| 水下射弹空化器参数对自然超空泡形态的影响 |
| |
| 引用本文： | 熊天红,易文俊,吴军基,刘怡昕.水下射弹空化器参数对自然超空泡形态的影响[J].南京理工大学学报(自然科学版),2008,32(5). |
| |
| 作者姓名： | 熊天红 易文俊 吴军基 刘怡昕 |
| |
| 作者单位： | 南京理工大学,弹道国防科技重点实验室,江苏,南京,210094 |
| |
| 摘 要： | 为获取有效减阻的自然超空泡形态特性，利用CFD商业软件Flunt 6．0，基于均匀多相流假设，建立了水下射弹自然超空泡流动的多相流模型。在射弹最大初速度500m／s、最小空化数为0．00155的条件下，计算了圆锥和圆盘两种空化器头部射弹模型的超空泡形态。分析了头型、直径、锥角、空化数等对自然超空泡形态特性的影响。仿真结果表明：自然超空泡的尺寸变化主要取决于空化数与空化器参数；圆盘头型空化器更利于射弹超空泡的形成：空化器的直径和锥角过小都不易产生自然超空泡。
|
| 关 键 词： | 射弹 空化器 空化数 自然超空泡 |
Effect of Cavitator Parameters for Underwater Projectiles on Natural Supercavity |
| |
| XIONG Tian-hong,YI Wen-jun,WU Jun-ji,LIU Yi-xin.Effect of Cavitator Parameters for Underwater Projectiles on Natural Supercavity[J].Journal of Nanjing University of Science and Technology(Nature Science),2008,32(5). |
| |
| Authors: | XIONG Tian-hong YI Wen-jun WU Jun-ji LIU Yi-xin |
| |
| Institution: | National Key Laboratory of Transient Physics;NUST;Nanjing 210094;China |
| |
| Abstract: | In order to obtain the characteristics of natural supercavity form with perfect reducible drag,and based on homogeneous flow hypothesis,a multi-phase model of natural supercavity flow for underwater projectiles is built using commercial CFD software Fluent 6.0.Supercavity form of several projectile model with disk cavitator and coniform cavitator are calculated under the maximal velocities of 500 m/s and the minimum cavity number of 0.001 55.The influence of headforms,diameters,cone angles,cavitation number... |
| |
| Keywords: | projectiles cavitators cavitation number natural supercavity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
