Numerical Solution of 3-D Water Entry Problems With a Constrained Interpolation Profile Method

被引:16
作者
Yang, Qingyong [1 ]
Qiu, Wei [1 ]
机构
[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada
来源
JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME | 2012年 / 134卷 / 04期
基金
加拿大自然科学与工程研究理事会;
关键词
slamming; water entry; CIP method; free surface capturing; FREE-SURFACE FLOWS; FLUID; EQUATIONS; VOLUME; IMPACT; CIP;
D O I
10.1115/1.4006152
中图分类号
P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
This paper presents the numerical solutions of slamming problems for 3D bodies entering calm water with vertical and oblique velocities. The highly nonlinear water entry problems are governed by the Navier-Stokes equations and were solved by a constrained interpolation profile (CIP)-based finite difference method on a fixed Cartesian grid. In the computation, the 3D CIP method was employed for the advection calculations and a pressure-based algorithm was applied for the nonadvection calculations. The solid body and the free surface interfaces were captured by density functions. For the pressure computation, a Poisson-type equation was solved at each time step by using the conjugate gradient iterative method. Validation studies were carried out for a 3D wedge, a cusped body vertically entering calm water, and the oblique entry of a sphere into calm water. The predicted hydrodynamic forces on the wedge, the cusped body, and the sphere were compared with experimental data. [DOI: 10.1115/1.4006152]
引用
收藏
页数:8
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