摘要
本文首次用严格满足流体力学、弹性力学和定解条件的数值方法来研究平头壳体撞水水弹性效应。 本文给出的这些方程的离散化形式特别适合于用计算机求解。文中列举的示范性计算中,其数值解与实测结果作了比较,说明本文解法有高的精度。 本文精确地揭示了壳体瞬态响应的详细特征,获得了壳体和流体早期运动的完整图象。
This paper studies the hydroelastic effect on the water-entry of a revolutionary shell with a flat nose and we utilize a numerical method which satisfies strictly the hydrodynamic oquations, elastrodynamic equations, boundary conditions and initial conditions.These discrete forms of the equations given by this paper are particularly suited to use a computer to solve their solutions. In the exemplarly calculation, we compare the numerical solution and the measured data. This Comparison illustrates that the method given by this paper has a high precision.This paper reveals accurately the details of instantaneous responses of the shell and obtains the complete pictures on the shell and fluid movements in their earlier period.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1991年第1期42-51,共10页
Chinese Journal of Hydrodynamics
关键词
壳体
撞水
水弹性
有限元法
差分法
hydroelasticity, finite element method, finite-difference method, instantaneous response, water-entry.
