计算力学学报2023，Vol.40Issue(6)：979-984,6.DOI:10.7511/jslx20210519003
不同界面计算方法对液滴在电场作用下变形数值模拟精度的影响
The effect of different interface capture methods on the simulation accuracy of droplet deformation under electric field
摘要
Abstract
Droplet's deformation under electric field is a basic research topic in Electrohydrodynamics.The accuracy of surface tension has a great influence on the simulation of droplet deformation.Based on the VOF model in OpenFOAM,we studied the effect of different phase update methods(MULES and isoAdvector algorithm)as well as different curvature calculation methods(phase fraction gradient and RDF function algorithm)on the simulation accuracy of droplet deformation under electric field.The results show that the isoAdvector algorithm requires lower mesh density than the MULES algorithm,but it generates higher error in surface tension calculation when coupled with phase fraction gradient algorithm.The simulation error of isoAdvector coupled RDF function algorithm is low,and it can deal with the droplet deformation both parallel and perpendicular to the electric field when using axisymmetric grids.The numerical results are in good agreement with the analytical solutions when using the isoAdvector coupled RDF function algorithm.关键词
电流体动力学/VOF模型/液滴变形/表面张力算法/OpenFOAMKey words
electrohydrodynamics/VOF model/droplet deformation/surface tension algorithm/Open-FOAM分类
数理科学引用本文复制引用
刘强,吴健..不同界面计算方法对液滴在电场作用下变形数值模拟精度的影响[J].计算力学学报,2023,40(6):979-984,6.基金项目
国家自然科学基金(11802079) （11802079）
国家重点研发项目(2020YFC2201000). （2020YFC2201000）
