Three-dimensional flow structures and heat transfer characteristics of compressible flow over a cylindrical cavity

Three-dimensional flow structures and heat transfer characteristics of compressible flow over a cylindrical cavity
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圆柱腔内可压缩流动的三维流动结构及传热特性

DOI:
10.1016/j.ast.2022.107408
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发表时间:
2022-02
影响因子:
5.6
通讯作者:
Hongwei Zheng
Hongwei Zheng
中科院分区:
工程技术1区
文献类型:
--
作者:
Jiangtao Wang;Te Ma;Zhe Wang;Ruixing Wang;Hongwei Song;Wu Yuan;Hongwei Zheng

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高速流过空腔时,会产生显著的局部热增加。通过风洞实验和计算分析,揭示了可压缩流动在圆柱形空腔内的换热特性。圆柱形空腔的加热强化作用在空腔后缘附近显着,且沿展向方向呈有限宽度分布。随着空腔直径(D)与空腔深度(H)之比的减小,圆柱形空腔的热增强效应减小。观察了圆柱形空腔内的换热与流动结构之间的关系。圆柱形空腔的三维几何特征导致了斜向回流涡流的形成,并在闭合空腔的两侧存在对称的开流区。
High-speed flows over a cavity produce remarkably local heat augments. Heat transfer characteristics of compressible flow over a cylindrical cavity were revealed using wind tunnel experiments and computational analysis. Heating augmentation induced by cylindrical cavities is significant near the trailing edge of the cavity and distributed in a finite width along the spanwise direction. The heating augmentation of the cylindrical cavity decreases with the decrease in the ratio of cavity diameter (D) to cavity depth (H). Relationships between heat transfer and flow structures of the cylindrical cavity are observed. 3D geometric features of the cylindrical cavity lead to the formation of slant recirculating eddy and the existence of symmetric open flow regions in both spanwise sides of the closed cavity.
DOI: 10.1007/978-3-642-03085-7_241
发表时间: 2009
期刊: --
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