期刊文献+

风洞板翅式热交换器气体流动特性试验 被引量:1

Flow characteristics experiment of plate-fin heat exchanger in wind tunnel
下载PDF
导出
摘要 针对风洞板翅式热交换器,开展了其在风洞运行工况下气体流动特性的研究。对比了板翅式热交换器和椭圆翅片管热交换器的扰流和压损特性,利用试验研究了不同来流风速、不同上游扰流片角度等条件下热交换器下游湍流发展变化规律,开展了封条、模块拼接缝等特征结构对气流扰动的影响研究。研究结果表明:该型板翅式热交换器相比椭圆翅片管热交换器,其对气流扰动更小,相同换热工况下压力损失也大幅减小;板翅式热交换器具有较好的整流作用,其后的气流扰动主要由自身结构决定,与来流条件关系不大,其中厚度较大的结构对气流的扰动会传播更远,需要设计合理的整流方案以减小扰动。 The flow characteristics of a plate-fin heat exchanger in the wind tunnel were studied. Firstly, the turbulence characteristics and pressure loss of the plate-fin heat exchanger and the finned oval tube heat exchanger were compared, and then the turbulence developments downstream of the heat exchanger under different inflow wind speeds and spoiler angle conditions were studied by experiments. Finally, the impacts of typical structures on the flow disturbance downstream of the heat exchanger were obtained. The results show that the plate-fin heat exchanger has less disturbance to the air flow and much smaller pressure loss under the same heat transfer condition than the finned oval tube heat exchanger. The plate-fin heat exchanger has good rectifying effect, and the flow disturbance, which has little relation with the incoming flow conditions, is mainly determined by its own structures. The disturbance of the large thickness structures in the heat exchanger propagates long distances, and a proper rectifier scheme is needed to reduce the disturbance.
作者 赵波 陈振华 李为民 陈吉明 朱博 温乾 ZHAO Bo;CHEN Zhenhua;LI Weimin;CHEN Jiming;ZHU Bo;WEN Qian(State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China;Facility Design and Instrumentation Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China)
出处 《实验流体力学》 CAS CSCD 北大核心 2022年第1期69-76,共8页 Journal of Experiments in Fluid Mechanics
关键词 风洞 板翅式热交换器 流动特性 湍流强度 试验研究 wind tunnel plate-fin heat exchanger flow characteristics turbulence intensity experimental research
  • 相关文献

参考文献13

二级参考文献113

共引文献172

同被引文献11

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部