A review on Rayleigh-Bénard convection influenced by the complicating factors
A review on Rayleigh-Bénard convection influenced by the complicating factors
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DOI：
10.1016/j.icheatmasstransfer.2023.106784
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发表时间：
2023-05
影响因子：
7
通讯作者：
Jiayin Song;Pan-Xin Li;Lu Chen;Chen-hao Li;Ben-Wen Li;Ling-Yun Huang
中科院分区：
文献类型：
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作者：
Jiayin Song;Pan-Xin Li;Lu Chen;Chen-hao Li;Ben-Wen Li;Ling-Yun Huang
热对流是热传导、热对流、热辐射等传热的基本方式之一，属于热流体力学。随着科学技术的发展和进步，以及学科间的交叉融合，热对流研究出现了新的内容和挑战。例如，沿着世界范围内能源消耗的增加，能量传输的增强越来越受到人们的关注，而这与热对流的发展密不可分。Rayleigh-Bénard（RB）对流作为自然对流的经典模型，已有100多年的研究历史，取得了大量的研究成果。然而，它仍然是最引人注目的课题之一，特别是稳定-失稳流动的复杂流动和热输运问题。因此，本文着重介绍了在热辐射、磁场、旋转和电场等复杂因素影响下的RB对流以及其他构型的自然对流的研究。总结和分析了其流动和输运特性，特别是传热特性。虽然这些因素通常表现出稳定效应，如延迟不稳定性的发生，但令人惊讶的是，在比强度范围内存在违反直觉但显着的通量增强。最后，对今后的研究方向进行了展望，如多场耦合问题、附加场效应的极限区以及稳定效应强化机制的统一观点等。
Thermal convection is one of the basic modes (thermal convection, thermal conduction, thermal radiation) of heat transfer, and it belongs to the thermo-fluid mechanics. With the development and progress of science and technology, as well as the cross accommodation of disciplines, new contents and challenges arise in the thermal convection. For instance, along with the increasing energy consumption all over the world, the enhanced energy transport has attracted more and more attentions, which is inseparable from the development of thermal convection. As a classical model of natural convection, the Rayleigh-Bénard (RB) convection has been investigated for more than 100 years and numerous research findings have been obtained. However, it is still one of the most notable subjects, particularly the complex flow and heat transport problems of the stabilizing-destabilizing flow. This review, therefore, focuses on the RB convection researches, as well as natural convection of other configurations, under the influence of various complicating factors, including thermal radiation, magnetic field, rotation and electrical field. The flow and transport characteristics, especially the heat transfer, are summarized and analyzed. Although these factors usually show a stabilizing effect, like the delay of the onset of instabilities, it is quite surprising that there is a counterintuitive but significant flux enhancement within the specific strength range. Finally, some topics of future work are prospected briefly, such as the multi-fields coupling problem, the ultimate regime with additional field effects and the unifying view on strengthening mechanism of stabilizing effects.