基于CIP方法的液滴冲击薄膜数值模拟  

A CIP-based numerical simulation of drop impact onto a liquid film

作　　者：叶洲腾 赵西增[1,2] 王兴刚[2] 

机构地区：[1]浙江大学海洋学院,杭州310058 [2]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,南京210029

出　　处：《水动力学研究与进展（A辑）》2015年第3期265-271,共7页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助(51209184;51479175);水文水资源与水利工程科学国家重点实验室开放基金资助(2013490211);高等学校博士学科点专项科研基金(20120101120150)~~

摘　　要：该文基于自主研发的气-液二相流数学模型开展了液滴冲击液膜的数值模拟,采用紧致插值曲线(CIP;constrained interpolation profile)方法离散Naiver-Stokes方程,完成速度-压力场的求解,并分析了速度场、压力场随时间变化的过程。采用VOF/WLIC(volume of fluid/weighed line interface calculation)方法重构了自由面,并与SOLA-VOF方法及CIP方法得到的自由面进行比较,验证VOF/WLIC方法对于液滴冲击液膜问题的适用性。通过调整气、液二相流的黏度比值,分析比较了不同黏度比值对模拟结果的影响。结果表明,CIP方法可精准重现液滴冲击过程中的复杂自由面流动现象。An in-house two-phase flow model has been established to simulate the phenomenon of drop impact onto flat liquid film. By solving discretized Navier-Stokes equation with CIP scheme, the velocity field and pressure field are obtained.Then VOF/WLIC method is adopted to capture the free surface. Comparing with SOLA-VOF method and CIP scheme, the applicability of VOF/WLIC method is verified on capturing the moving free surface during drop impact process. At last, different viscosities of water and air are chosen for comparing the effects of different viscosities on numerical results. The numerical results indicate that this CIP-based model is capable of simulating the drop impact phenomena accurately.

关 键 词：液滴冲击 CIP方法 二相流 VOF/WLIC方法 自由面流动 

分 类 号：O352[理学—流体力学]