Numerical Stability Analysis for a Stationary and Translating Droplet at Extremely Low Viscosity Values Using the Lattice Boltzmann Method Color-GradientMulti-Component Model with Central Moments Formulation

作     者：Karun P.N.Datadien Gianluca Di Staso Federico Toschi 

作者机构：Department of Applied Physics and Science EducationEindhoven University of Technology5600MB EindhovenNetherlands FLOW Matters Consultancy B.V.5612AEEindhovenThe Netherlands Istituto per le Applicazioni del CalcoloConsiglio Nazionale delle Ricerche00185 RomeItaly 

出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)

年 卷 期：2023年第33卷第1期

页      面：330-348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：the Netherlands Organization for Scientific Research(NWO)research project High Tech Systems and Materials(HTSM) with project number 13912 

主　　题：Lattice Boltzmann method multicomponent flow numerical stability low viscosity 

摘      要：Multicomponent models based on the Lattice Boltzmann Method(LBM)have clear advantages with respect to other approaches,such as good parallel performances and scalability and the automatic resolution of breakup and coalescence *** flow simulations are useful for a wide range of applications,yet many multicomponent models for LBMare limited in their numerical stability and therefore do not allow exploration of physically relevant low viscosity *** we performa quantitative study and validations,varying parameters such as viscosity,droplet radius,domain size and acceleration for stationary and translating droplet simulations for the color-gradientmethod with centralmoments(CG-CM)formulation,as this method promises increased numerical stability with respect to the *** focus on numerical stability and on the effect of decreasing grid-spacing,*** resolution,in the extremely low viscosity regime for stationary droplet *** effects of small-and large-scale anisotropy,due to grid-spacing and domain-size,respectively,are investigated for a stationary *** effects on numerical stability of applying a uniform acceleration in one direction on the domain,*** both the droplet and the ambient,is explored into the low viscosity regime,to probe the numerical stability of the method under dynamical conditions.