PARALLEL ADAPTIVE SIMULATION OF A PLUNGING LIQUID JET

作     者：Azat Yu.Galimov Onkar Sahni Richard T.Lahey Jr. Mark S.Shephard Donald A.Drew Kenneth E.Jansen 

作者机构：Rensselaer Polytechnic Institute 

出 版 物：《Acta Mathematica Scientia》 (数学物理学报（B辑英文版）)

年 卷 期：2010年第30卷第2期

页      面：522-538页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Office of Naval Research(Grant ONRDC14292111) 

主　　题：plunging liquid jet air entrainment two-phase flows level set method parallel adaptive simulation 

摘      要：This paper is concerned with three-dimensional numerical simulation of a plunging liquid jet. The transient processes of forming an air cavity around the jet, capturing an initially large air bubble, and the break-up of this large toroidal-shaped bubble into smaller bubbles were analyzed. A stabilized finite element method （FEM） was employed under parallel numerical simulations based on adaptive, unstructured grid and coupled with a level-set method to track the interface between air and liquid. These simulations show that the inertia of the liquid jet initially depresses the pool＇s surface, forming an annular air cavity which surrounds the liquid jet. A toroidal liquid eddy which is subse- quently formed in the liquid pool results in air cavity collapse, and in turn entrains air into the liquid pool from the unstable annular air gap region around the liquid jet.