T型管中冷热流体混合过程热波动大涡模拟

朱维宇; 卢涛; 姜培学; 郭志军; 王奎升

doi:10.3879/j.issn.1000-0887.2009.11.004

T型管中冷热流体混合过程热波动大涡模拟

doi: 10.3879/j.issn.1000-0887.2009.11.004

北京化工大学机电工程学院,北京 100029;2.教育部热科学与动力工程重点实验室,清华大学热能工程系,北京 100084

基金项目: 国家自然科学基金资助项目(50906002);北京市科技新星计划资助项目(2008B16)

详细信息

作者简介:
朱维宇(1969- ),男,辽宁辽阳人,高级工程师,硕士(Tel:+86-10-84079919;Fax:+86-10-84079880;E-mail:lhbjbzwy@sina.com);卢涛(1975- ),男,江西丰城人,副教授,博士(联系人.Tel:+86-10-64417994;E-mail:likesurge@sina.com).

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出版历程
- 收稿日期: 2008-03-03
- 修回日期: 2009-09-10
- 刊出日期: 2009-11-15

Large Eddy Simulation of Hot and Cold Fluids Mixing in a T-Junction for Prediction of Thermal Fluctuations

School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;

摘要

摘要: 在FLUENT平台上，运用大涡模拟湍流模型及Smagorinsky-Lilly亚格子模型，对T型混合结构中的温度波动进行了模拟．获得了分别用于描述时均温度和温度波动强度的无量纲时均温度和无量纲均方根温度．分析了用于热疲劳分析和生命周期评价关键参数，即温度波动的功率谱密度函数．对不同条件下的混合过程进行了模拟，分析不同Reynolds数Re和Richardson数Ri对混合过程和热波动的影响
- 数值模拟 /
- 热波动 /
- T型管道
Abstract: The temperature fluctuations in a mixing T-junction have been smiulated on the FLUENT platform using the large eddy simulation (LES) turbulent flow model with a sub-grid scale Smagorinsky-Lilly model. The normalized mean and root mean square temperatures, which are used to describe the time-averaged temperature and temperature fluctuation intensity, were obtained, as well as velocity. The power spectral densities of temperature fluctuations, which are key parameters for thermal fatigue analysis and life tmie evaluation, were analyzed. The simulation results were consistent with expermiental data published in the literature, which shows that the LES is reliable. Severalmixing processes under different conditions were smiulated in order to analyze the effects of varying Reynolds number (Re) and Richardson number (Ri) on the mixing course and thermal fluctuations.
- numerical simulation /
- thermal fluctuation /
- T-junction

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参考文献(19)

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T型管中冷热流体混合过程热波动大涡模拟

doi: 10.3879/j.issn.1000-0887.2009.11.004

作者简介:
朱维宇(1969- ),男,辽宁辽阳人,高级工程师,硕士(Tel:+86-10-84079919;Fax:+86-10-84079880;E-mail:lhbjbzwy@sina.com);卢涛(1975- ),男,江西丰城人,副教授,博士(联系人.Tel:+86-10-64417994;E-mail:likesurge@sina.com).

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Large Eddy Simulation of Hot and Cold Fluids Mixing in a T-Junction for Prediction of Thermal Fluctuations

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留言板

T型管中冷热流体混合过程热波动大涡模拟

doi: 10.3879/j.issn.1000-0887.2009.11.004

作者简介: 朱维宇(1969- ),男,辽宁辽阳人,高级工程师,硕士(Tel:+86-10-84079919;Fax:+86-10-84079880;E-mail:lhbjbzwy@sina.com);卢涛(1975- ),男,江西丰城人,副教授,博士(联系人.Tel:+86-10-64417994;E-mail:likesurge@sina.com).

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出版历程

Large Eddy Simulation of Hot and Cold Fluids Mixing in a T-Junction for Prediction of Thermal Fluctuations

计量

出版历程

目录

作者简介:
朱维宇(1969- ),男,辽宁辽阳人,高级工程师,硕士(Tel:+86-10-84079919;Fax:+86-10-84079880;E-mail:lhbjbzwy@sina.com);卢涛(1975- ),男,江西丰城人,副教授,博士(联系人.Tel:+86-10-64417994;E-mail:likesurge@sina.com).