Numerical simulation of high-speed water entry of cavitator with load reduction device based on fluid-structure interaction
LI Hong1, LI Guanglei2, LIU Zhiyuan1, ZHENG Kexin1, GAO Xiaochu1, LI Tao1
1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China;
2. Harbin Turbine Company Limited, Harbin 150046, China
Abstract：Based on the general coupling method by using MSC.Dytran software, numerical simulation is conducted on the process of water entry of cavitation vertically at different initial velocities in this paper. The axial acceleration and axial force response are studied by comparing aluminum foam cavitation with cavitation made of foamed aluminum. At the same time, the load reduction efficiency of aluminum foam is analyzed. The results show that the peak values of axial acceleration and peak axial force of the cavitation made of foamed aluminum and aluminum alloy cavitation are proportional to the water entry velocity; the load reduction rate of axial acceleration amplitude can reach 70%, and the load reduction rate of axial force amplitude can reach 14%.
李鸿1，李光磊2，刘志远1，郑可心1，高晓初1，李涛1. 基于流固耦合的降载空化器高速入水数值研究[J]. 振动与冲击, 2021, 40(23): 254-259.
LI Hong1, LI Guanglei2, LIU Zhiyuan1, ZHENG Kexin1, GAO Xiaochu1, LI Tao1. Numerical simulation of high-speed water entry of cavitator with load reduction device based on fluid-structure interaction. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(23): 254-259.
[1] von Karman, T. The Impact on Seaplane Floats during Landing[R]. Washington DC, USA: National Advisory Committee for Aeronautics, NACA Technical Notes 321, 1929.
[2] 潘光,杨悝.空投鱼雷入水载荷[J].爆炸与冲击, 2014, 34(05):521-526.
Pan Guang, Yang Kui. Impact force encountered by water-entry airborne torpedo[J]. Explosion and Shock Waves, 2014, 34(05):521-526. (in Chinese)
[3] Shi Y, Pan G, Yan G X, et al. Numerical study on the cavity characteristics and impact loads of AUV water entry[J]. Applied Ocean Research, 2019, 89:44-58.
[4] Derakhshanian M S, Haghdel M, Alishahi M M, et al. Experimental and numerical investigation for a reliable simulation tool for oblique water entry problems[J]. Ocean Engineering, 2018, 160:231-243.
[5] 孙玉松,周穗华,张晓兵, 等.基于多介质ALE方法的大型弹体入水载荷特性研究[J].海军工程大学学报, 2019, 31(06):101-106.
Sun Yun-song, Zhou Shui-hua, Zhang Xiao-bing, et al. On water-impact load of heavy projectiles base on multi-material ALE method[J]. Journal of Naval University of Engineering, 2019, 31(06):101-106. (in Chinese)
[6] Gao J, Chen Z, Huang Z, et al. Numerical investigations on the oblique water entry of high-speed projectiles[J]. Applied Mathematics and Computation, 2019, 362.
[7] Chen C, Yuan X, Liu X, et al. Experimental and numerical study on the oblique water-entry impact of a cavitating vehicle with a disk cavitator[J]. International Journal of Naval Architecture and Ocean Engineering, 2019, 11( 1):482-494.
[8] 卢丙举,朱珠.细长前锥段超空泡航行器高速入水的载荷数值模拟[J].舰船科学技术,2017,39(15):119-123.
Lu Bing-ju, Zhu Zhu. Numerical research on load of a super-cavity vehicle with cone-shaped segment at high-speed water-entry[J]. Ship Science and Technology, 2017, 39(15): 119-123.
[9] Panciroli, Riccardo, Pagliaroli, et al. On Air-Cavity Formation during Water Entry of Flexible Wedges[J]. Journal of Marine Science & Engineering, 2018.
[10] Yan G X, Pan G, Shi Y, et al. Experimental and numerical investigation of water impact on air-launched AUVs[J]. Ocean Engineering, 2018, 167(NOV.1):156-168.
[11] M. Ahmadzadeh, B. Saranjam, A. Hoseini Fard, A. R. Binesh. Numerical simulation of sphere water entry problem using Eulerian–Lagrangian method[J]. Applied Mathematical Modelling, 2014, 38(5-6).
[12] 李忠献, 张茂轩, 师燕超. 闭孔泡沫铝的动态压缩性能试验研究[J]. 振动与冲击, 2017, 36(005):1-6.
Li Zhong-xian, Zhang Mao-xuan, Shi Yan-chao. Tests for dynamic compressive performance of closed-cell aluminum foams[J]. Journal of Vibration and Shock, 2017, 36(005):1-6
