| 利用格子Boltzmann方法模拟矩形腔内纳米流体Raleigh-Benard对流 |
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| 引用本文： | 郭亚丽,徐鹤函,沈胜强,魏兰.利用格子Boltzmann方法模拟矩形腔内纳米流体Raleigh-Benard对流[J].物理学报,2013,62(14):144704-144704. |
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| 作者姓名： | 郭亚丽 徐鹤函 沈胜强 魏兰 |
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| 作者单位： | 大连理工大学能源与动力学院, 大连 116024 |
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| 基金项目： | 国家自然科学基金(批准号:50906005)资助的课题.*Project supported by the National Natural Science Foundation of China |
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| 摘 要： | 利用格 子 Boltzmann方法模拟矩形腔内纳米流体Rayleigh-Benard对流, 得到温度场和流线分布, 比较分析不同Ra数、体积分数、粒径下纳米流体对流换热的变化情况. 结果表明: 在相同的Ra 数和体积分数下, 纳米流体的对流换热随着粒径的增大而减弱; 在相同的Ra数和粒径下, 纳米流体的对流换热随着体积分数增大而增强.
关键词：
纳米流体
Raleigh-Benard
多相流
格子Boltzmann方法
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| 关 键 词： | 纳米流体 Raleigh-Benard 多相流 格子Boltzmann方法 |
| 收稿时间： | 2012-11-30 |
Nanofluid Raleigh-Benard convection in rectangular cavity: simulation with lattice Boltzmann method |
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| Guo Ya-Li
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Xu He-Han
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Shen Sheng-Qiang
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Wei Lan.Nanofluid Raleigh-Benard convection in rectangular cavity: simulation with lattice Boltzmann method[J].Acta Physica Sinica,2013,62(14):144704-144704. |
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| Authors: | Guo Ya-Li Xu He-Han Shen Sheng-Qiang Wei Lan |
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| Abstract: | The lattice Boltzmann method is used to simulate the thermal field and flow field of nanofluid Raleigh-Benard convection in a rectangular cavity. The heat transfer characteristics of nanofluid are compared under different Raleigh numbers, volume fractions of nanoparticles and particle sizes. The results show that under the same Raleigh number and volume fraction, the convection heat transfer of nanofluid becomes weakened by increasing the particle size. Under the same Raleigh number and particle size, the convection heat transfer of nanofluid becomes strengthened by increasing the volume fraction of nanoparticles.
Keywords：
nanofluid
Raleigh-Benard
multiphase flow
lattice Boltzmann method |
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| Keywords: | nanofluid Raleigh-Benard multiphase flow lattice Boltzmann method |
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