Numerical Simulation Method for Ventilated Supercavitating Multiphase Flow Field
-
摘要: 通气超空泡流动涉及多相流动、湍流、相变及可压缩等流体力学难点问题, 流动机理非常复杂。其中多相流模型是通气超空泡数值仿真研究工作的重点, 将严重影响通气超空泡数值仿真结果的精度。本文有针对性地对比了目前广泛采用的均质平衡流模型和欧拉双流体模型, 结合作者所在课题组多年来在水洞试验和数值仿真方面的研究成果, 从空泡形态和流体动力两方面分析了欧拉双流体模型在预测通气超空泡方面的优势。随着研究的进一步深入, 通气超空泡数值仿真方法有望成为超空泡减阻技术的重要研究手段, 可以为工程设计提供参考。Abstract: Ventilated supercavitating flow involves such topics in fluid mechanics as multiphase flow, turbulence, phase change and compressibility, its mechanism is very complex. The multiphase flow model has attracted much more atten-tion in the study of numerical simulation of supercavitating flow, however its accuracy in simulation is not satisfactory. In this paper, the homogeneous model, which are widely used in the world, are compared with the Euler two-fluid model by combining with the authors′ research by means of water tunnel experiments and numerical simulation. The advan-tages of the Euler two-fluid model in predicting ventilated supercavitation is analyzed in terms of cavity shape and hy-drodynamics of a vehicle. Numerical simulation of ventilated supercavitation is expected to become an important ap-proach of drag-reduction technology through supercavitation.
-
[1] Reichardt H. The Laws If Cavitation Bubbles as Axially Symmetrical Bodies in a Flow[R]. Ministry of Aircraft Pro-ductuin Reports and Translations. Britian, 1946: 322-326. doi: 1 [2] Martin W, Travis J S, Roger E A A. Experimental Study of a Ventilated Supercavitating Vehicle[C]//5th International Symposium on Cavitation, Osaka, Japan, 2003: 11-13 doi: 2 [3] 蒋洁明, 鲁传敬, 胡天群, 等. 轴对称体通气空泡的水动力试验研究[J]. 力学季刊, 2004, 25(4): 450-456. doi: 3Jiang Jie-ming, Lu Chuan-jing, Hu Tian-qun, et al. The Ex-perimental Research on the Cavitating Flow Round An Asisymmetric Body with Ventilation[J]. Chinese Quarterly of Mechanics, 2004, 25(4): 450-456. doi: 3 [4] 蒋增辉, 于开平, 张嘉钟, 等. 超空泡航行体尾部流体动力特性试验模型支撑方式的选择研究[J]. 机械科学与技术, 2007, 26(12): 1648-1651. doi: 4Jiang Zeng-hui, Yu Kai-ping, Zhang Jia-zhong, et al. Selecting the Strutting Position for Models of Experiments on Hydrodynamic Characteristics of the Aft Section of an Underwater Supercavitating Vehicle[J]. Mechanical Science and Technology for Aerospace Engineering, 2007, 26(12): 1648-1651. doi: 4 [5] Logvinovich G V. Hydrodynamics of Free-Boundary Flow[R]. U. S. Department of Commerce, Washington, DC, 1972, Trans- lated from the Russian (NASA-TT-F-658). doi: 5 [6] Qin Q, Song C S, Arndt R E. A Virtual Single-phase Natural Cavitation Model and Its Application to Cav2003 Hydrofoil [C]//5th International Symposium on Cavitation, Osaka, Ja-pan, 2003. doi: 6 [7] Leroux J B, Oliver C D, Astolfi J A. A Joint Experimental and Numerical Study of Mechanisms Associated to Instability of Partial Cavitation on Two-dimensional Hydrofoil[C]//5th In-ternational Symposium on Cavitaion, Osaka, Japan, 2003. doi: 7 [8] Oliver C D, Astolfi J A. Numerical Prediction of the Cavita-tion Flow on a Two-dimensional Symmetrical Hydrofoil with a Single Fluid Model[C]//5th International Symposium on Cavitation, Osaka, Japan, 2003. doi: 8 [10] Kubota A, Kato H, Yamaguchi H. A New Modelling of Cavitating Flows: a Numerical Study of Unsteady Cavitation on a Hydrofoil Section[J]. J Fluid Mech, 1992, 240: 59-96. doi: 9 [11] Kunz R F, Boger D A, Stinebring D R, et al. A Procondi-tioned Navier-Stokes Method for Two Phase Flows with Ap-plication to Cavitation[J]. Computers and Fluids, 2000, 29: 849-875. doi: 10 [12] Kunz R F, Boger D A, Chyczeweki T S, et al. Multi-phase CFD Analysis of Natural and Ventilated Cavitation about Submerged Bodies[C]//Third ASME/JSME Joint Fluids Engi- neering Conference. San Francisco, California, 1999. doi: 11 [13] Jules W. Lindau, Robert F. Kunz, Jason M. Mulherin, James J. Dreyer, David R. Stinebring. Fully Coupled 6-Dof to Urans Modeling of Cavitating Flows Around a Supercavitating Ve-hicle[C]//Fifth International Symposium on Cavitation (CAV2003)Osaka, Japan, 2003. doi: 12 [14] 郭建红, 鲁传敬, 陈瑛, 等. 基于输运方程类空化模型的通气空泡流数值模拟[J]. 力学季刊, 2009, 30(3): 378-384. doi: 13 [15] Singhal A K, Vaidya N, Leonard A D. Multi-dimensional Simulation of Cavitating Flows Using a PDF Model for Phase Change[C]//ASME Fluids Engineering Division Sum-mer Meeting, 1997. doi: 14
点击查看大图
计量
- 文章访问数: 1062
- HTML全文浏览量: 4
- PDF下载量: 676
- 被引次数: 0