Natural convection and entropy generation in a vertically concentric annular space

Natural convection and entropy generation in a vertically concentric annular space
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垂直同心环形空间中的自然对流和熵产生

DOI:
10.1016/j.ijthermalsci.2010.08.011
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发表时间:
2010-12
影响因子:
4.5
通讯作者:
Sheng CHEN, et al.
Sheng CHEN, et al.
中科院分区:
工程技术2区
文献类型:
--
作者:
Sheng CHEN, et al.

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参考文献

相似文献

垂直同心环形空间中的自然对流具有重要的理论意义和实际应用价值。然而,现有的公开文献的熵产分析,它仍然是稀疏的。本文利用格子Boltzmann方法系统地研究了Rayleigh数、环隙曲率和Prandtl数对垂直同心环隙内自然对流流型、温度分布和熵产的影响。分析的范围很广,从定常层流对流到非定常过渡态。并从热力学角度分析了不可逆现象的非线性分支。
Natural convection in a vertically concentric annular space is of fundamental interest and practical importance. However, available open literature on entropy generation analysis for it is still sparse. In the present work we investigate systematically the effects of Rayleigh number, curvature of annulus and Prandtl number on flow pattern, temperature distribution and entropy generation for natural convection inside a vertically concentric annuli with the aid of the lattice Boltzmann method. The analyzed range is wide, varying from steady laminar convection to unsteady transitional state. Furthermore, we analysze the non-linear branch of irreversible phenomena from a thermodynamics view point.
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