应用数学和力学2012，Vol.33Issue(7)：856-867,12.DOI:10.3879/j.issn.1000-0887.2012.07.006
填充烧结铜球的T型管中流体混合的大涡模拟
LES of Fluid Mixing in a Tee With a Sintered Porous Medium
摘要
Abstract
Mixing processes of hot and cold fluids in a tee with and without sintered copper spheres were simulated by FLUENT using the large-eddy simulation (LES) turbulent flow model and the sub-grid scale (SGS) Smagorinsky-Lilly ( SL) model with buoyancy. Comparisons of the numerical results of the two cases with and without sintered copper spheres show that the porous medium significantly reduces the velocity and temperature fluctuations, because the porous medium can effectively restrict the fluid flow and enhance heat transfer. The porous media obviously increase the pressure drop in the main duct. The porous medium reduces the PSD of the temperature fluctuations in the frequency range from 1 Hz to 10 Hz.关键词
大涡模拟/混合/T型管道/烧结铜球Key words
large-eddy simulation/ mixing/ tee-, sintered porous medium分类
能源科技引用本文复制引用
王永伟,卢涛,姜培学,成鹏飞,王奎升..填充烧结铜球的T型管中流体混合的大涡模拟[J].应用数学和力学,2012,33(7):856-867,12.基金项目
国家自然科学基金资助项目(50906002) （50906002）
国家基础研究计划基金资助项目(20l1CB706900) （20l1CB706900）
高等学校博士学科点专项科研基金资助项目(20090010110006) （20090010110006）
北京市科技新星计划基金资助项目(2008B16) （2008B16）
