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Multicellular natural convection in a high aspect ratio cavity: experimental and numerical results

机译:高长宽比腔中的多细胞自然对流:实验和数值结果

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摘要

This work is a contribution to the highlighting of the secondary flows in vertical cavities with high aspect ratio, in laminar regime. Multicellular flows in high aspect ratio two-dimensional cavities, such as those encountered in insulated glazing units, are the main focus of this investigation. Numerical and experimental results are presented. Authors investigate a numerical study on the temperature field and the associated Nusselt number, and on the velocity field. In the experiments, Particle Image Velocimetry is used to obtain the velocity field. The numerical and experimental results show the presence of secondary cells.
机译:这项工作有助于在层流状态下高纵横比的垂直腔中突出二次流。高纵横比的二维腔体中的多细胞流动(例如在隔热玻璃窗中遇到的流动)是此研究的主要重点。给出了数值和实验结果。作者对温度场和相关的努塞尔数以及速度场进行了数值研究。在实验中,使用粒子图像测速获得速度场。数值和实验结果表明存在二次电池。

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