Fictitious domain method for fully resolved reacting gas-solid flow simulation

被引:18
作者
Zhang, Longhui [1 ]
Liu, Kai [1 ]
You, Changfu [1 ]
机构
[1] Tsinghua Univ, Dept Thermal Engn, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
Fully resolved simulation (FRS); Fictitious domain method; Navier-Stokes equation; Reacting particulate flows; Low Mach number flows; DIRECT NUMERICAL-SIMULATION; FINITE-DIFFERENCE SCHEME; PARTICULATE FLOWS; HEAT-TRANSFER; COMPLEX GEOMETRIES; IMMERSED-BOUNDARY; FORMULATION; PARTICLES;
D O I
10.1016/j.jcp.2015.07.010
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Fully resolved simulation (FRS) for gas-solid multiphase flow considers solid objects as finite sized regions in flow fields and their behaviours are predicted by solving equations in both fluid and solid regions directly. Fixed mesh numerical methods, such as fictitious domain method, are preferred in solving FRS problems and have been widely researched. However, for reacting gas-solid flows no suitable fictitious domain numerical method has been developed. This work presents a new fictitious domain finite element method for FRS of reacting particulate flows. Low Mach number reacting flow governing equations are solved sequentially on a regular background mesh. Particles are immersed in the mesh and driven by their surface forces and torques integrated on immersed interfaces. Additional treatments on energy and surface reactions are developed. Several numerical test cases validated the method and a burning carbon particles array falling simulation proved the capability for solving moving reacting particle cluster problems. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:215 / 228
页数:14
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