Vertical water entry of projectiles with surface seal

doi:10.1016/j.oceaneng.2020.107606

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Vertical water entry of projectiles with surface seal
	Wang YF(王宇飞); Ye BS(叶秉晟); Wang ZY(王志英); Huang J(黄荐); Wang YW(王一伟); Huang CG(黄晨光)
刊名	OCEAN ENGINEERING
	2020-11-12
卷号	216 页码:107606
ISSN号	0029-8018
DOI	10.1016/j.oceaneng.2020.107606
英文摘要	The water entry of a three-dimensional slender projectile with a constant vertical velocity is investigated numerically, and experiments are done to validate numerical results. We limit the scope of this work to the cavity forming stage at which surface seals. Typical experiments are carried out in a launching system. A pressure-based compressible multiphase solver combined with the Kunz cavitation model is developed within the OpenFOAM® platform. The numerical and experiment results show a good agreement. The time-dependent change regularity of the drag coefficient, pressure distribution, air-entrained cavity evolution, and flow characteristics inside the cavity are elaborated. Their relationships with the key parameter Froude number are also discussed. Results indicate that the drag coefficient after the impact phase is approximately equal to that in supercavitation case, and it is generally of the Froude number. Cavity shapes are generally independent of Froude number in the early stage of water entry. However, discrepancies in profiles gradually appear at a later time. For the airflow characteristics, circumferential vortex rings are found near the free surface in the early stage of water entry. The pressure inside the cavity decreases with time because of the rapid growth in cavity volume, which the entrained air cannot compensate for.
分类号	一类
语种	英语
WOS记录号	WOS:000596863000008
其他责任者	Wang, Yiwei
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85697]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式 GB/T 7714	Wang YF,Ye BS,Wang ZY,et al. Vertical water entry of projectiles with surface seal[J]. OCEAN ENGINEERING,2020,216:107606.
APA	王宇飞,叶秉晟,王志英,黄荐,王一伟,&黄晨光.(2020).Vertical water entry of projectiles with surface seal.OCEAN ENGINEERING,216,107606.
MLA	王宇飞,et al."Vertical water entry of projectiles with surface seal".OCEAN ENGINEERING 216(2020):107606.