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填充烧结铜球的T型管中流体混合的大涡模拟 被引量：2

LES of Fluid Mixing in a Tee With a Sintered Porous Medium
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摘要 在FLUENT软件平台上,运用大涡模拟湍流模型及Smagorinsky-Lilly亚格子尺度模型,对填充有烧结铜球多孔介质的T型管道内冷热流体混合过程的流动与传热情况进行了数值计算,与未填充多孔介质时混合区域内的平均温度和温度波动、平均速度和速度波动等数据进行了对比,并对温度波动进行了功率谱密度分析.数值结果表明,多孔介质可有效削弱T型通道流体混合区域内的温度和速度波动,有效降低1 Hz至10 Hz频域中的温度波动的功率谱密度. 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 mod- el 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 l0 Hz.
作者 王永伟 卢涛 姜培学 成鹏飞 王奎升
机构地区 北京化工大学机电工程学院 清华大学热能工程系
出处 《应用数学和力学》 CSCD 北大核心 2012年第7期856-867,共12页 Applied Mathematics and Mechanics
基金 国家自然科学基金资助项目(50906002) 国家基础研究计划基金资助项目(2011CB706900) 高等学校博士学科点专项科研基金资助项目(20090010110006) 北京市科技新星计划基金资助项目(2008B16)
关键词 大涡模拟 混合 T型管道 烧结铜球 large-eddy simulation mixing tee sintered porous medium
分类号 TK121 [动力工程及工程热物理—工程热物理]
  • 相关文献

参考文献34

  • 1朱维宇,卢涛,姜培学,郭志军,王奎升.T型管中冷热流体混合过程热波动大涡模拟[J].应用数学和力学,2009,30(11):1295-1306. 被引量：11
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二级参考文献1

共引文献10

同被引文献15

  • 1谭璞,李剑波.核电厂管道热疲劳机理与防治[J].核安全,2011,10(4):23-28. 被引量：17
  • 2FRANK T, LIFANTE C, PRASSER H M, et al. Simulation of turbulent and thermal mixing in T-junctions using URANS and scale-resolving turbulence models in ANSYS CFX [J]. Nuclear Engineering and Design, 2010, 240 (9): 2313- 2328.
  • 3KUHN S, BRAILLARD O, NI CENO B, et al. Computational study of conjugate heat transfer in T-junctions [J]. Nuclear Engineering and Design, 2010, 240(6) :1548-1557.
  • 4LEE J I, HU L W, SAHA P, et al. Numerical analysis of thermal striping induced high cycle ther- mal atigue in a mixing tee [J]. Nuclear Engineer- ing and Design, 2009, 239(5) :833-839.
  • 5HU L W, KAZIMI M S. LES benchmark study of high cycle temperature fluctuations caused by ther- mal striping in a mixing tee [J]. International Journal of Heat and Fluid Flow, 2006, 27 (1) :54-64.
  • 6NEMATOLLAHI M, KHONSHA B. Comparison of T-junction flow pattern of water and sodium for different geometries of power plant piping systems [J].Annals of Nuclear Energy, 2012, 39(1) : 83- 93.
  • 7WEGNER B, HUAI Y, SADIKI A. Comparative study of turbulent mixing in jet in cross-flow config- urations using LES [J]. International Journal of Heat and Fluid Flow, 2004, 25(5) :767-775.
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  • 9LU T, JIANG P X, GUO Z J, et al. Large-eddy simulations (LES) of temperature fluctuations in a mixing tee with/without a porous medium[J]. International Journal of Heat and Mass Transfer, 2010, 53(21/22) :4458-4466.
  • 10WUH L, PENG X F, CHEN T K. Influence ofsleeve tube on the flow and heat transfer behavior at a T-junction [J]. International Journal of Heat and Mass Transfer, 2003, 46(14):2637-2644.

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应用数学和力学
2012年 第7期

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