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首页> 外文期刊>International Journal of Heat and Mass Transfer >Enhanced thermal energy transport using adiabatic block inside lid-driven cavity
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Enhanced thermal energy transport using adiabatic block inside lid-driven cavity

机译：在盖驱动腔内使用绝热块增强热能传输

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摘要

Most of the energy related applications are involved with heat transfer and fluid flow, and the efficient utilization of energy system is always a matter of great importance. With a simple flow geometry, the present work is devoted to report a better thermal energy transfer utilizing an adiabatic block in a side-walls moving, differentially-heated cavity. The study demonstrates the effective role of the adiabatic block on energy transport from source to sink. The adiabatic block, depending on the situations, both favors and hinders overall heat transfer of the system. The size of the block decides the modality of thermal energy transfer. In this work, different speeds and configurations of wall motion are investigated exhaustively to assess the extent of heat transfer augmentation and the optimal block sizes. The results indicate that, up to a certain block size, the thermal energy transport of this cavity enhances. Heat transfer augmentation is remarkably high for opposing flow situation. The dynamics of energy flow from the source to the sink is presented using heatfunction that reveals the evolution of energy recirculation cells in the cavity. The presence of an adiabatic block potentially suppresses this energy recirculation. The evolved vortical flow structure in the cavity is explained using elliptical and hyperbolic points. The study is further extended to include the impact of cavity inclination on the thermal performance.
机译：大多数与能源有关的应用都涉及传热和流体流动，能源系统的有效利用始终是至关重要的。通过简单的流动几何结构，本工作致力于报告利用侧壁移动的差热腔中的绝热块更好的热能传递。该研究证明了绝热块在能量从源到汇的运输中的有效作用。根据情况，绝热块有利于和阻碍系统的整体传热。块的大小决定了热能传递的方式。在这项工作中，详尽地研究了壁运动的不同速度和配置，以评估传热增强的程度和最佳块尺寸。结果表明，直到一定的块大小，该腔的热能传输都得以增强。对于逆流情况，传热增加非常高。从热源到水槽的能量流动力学是使用热函数来表示的，它揭示了空腔中能量循环单元的演变。绝热块的存在可能抑制这种能量再循环。使用椭圆和双曲线点来解释空腔中演化的涡流结构。该研究进一步扩展到包括腔体倾斜度对热性能的影响。

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