中教数据库 > Journal of Hydrodynamics > 文章详情

FRACTIONAL-STEP FINITE ELEMENT METHOD FOR CALCULATION OF 3-D FREE SURFACE PROBLEM USING LEVEL SET METHOD

更新时间:2023-08-14

【摘要】A two-step Taylor-Galerkin fractional-step finite element method, which is of second order accuracy in space and time, was proposed for the three-dimensional free surface problem. With this method, the intermediate velocity was explicitly obtained by neglecting pressure gradient term, and then the velocity was corrected by adding the effects of pressure once the pressure field had been obtained from the pressure Poisson equation. The level set approach was applied to track implicitly the free surface. In order to track the free surface, the transport equation of the level set function was solved at each time step and the level set function is reinitialized through iteration to maintain it as a distance function. The governing equations of the system were discretized by the two- step Taylor-Galerkin method, which is of high-order accuracy and easy to be used. The validity and reliability of this method in this article were proved by two numerical examples.

【关键词】

328 2页 免费

发表评论

登录后发表评论 (已发布 0条)

点亮你的头像 秀出你的观点

0/500
以上留言仅代表用户个人观点,不代表中教立场
相关文献

推荐期刊

Copyright © 2013-2016 ZJHJ Corporation,All Rights Reserved

京ICP备2021021570号-13

京公网安备 11011102000866号