Dynamic and thermal characteristics of a turbulent and heated offset jet were numerically investigated using Ansys Fluent. The jet’s heated bottom wall is mounted with a single square-section rib and characterized with constant heat flux. The flow velocity, at the nozzle exit, corresponds to a Re value of 39 000, besides the offset ratio is assumed to be fixed at 5. Nine different rib positions were tested in order to figure out which is the optimum one that enhances most the heat transfer. Detailed analysis of the development of the flow in addition to the convective heat transfer features is presented. The results showed that flow behavior changes significantly with the presence of the rib. Further, the heat transfer investigation revealed two optimum rib positions that guarantee the heat transfer amelioration.

中文翻译：

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对流传热优化，肋在湍流偏移射流中展开

使用Ansys Fluent对湍流和加热偏移射流的动态和热特性进行了数值研究。射流加热的底壁安装有单个方形截面的肋骨，并具有恒定的热通量。喷嘴出口处的流速对应的Re值为39 000，除了偏移比被假定为固定为5外，还测试了9个不同的肋骨位置，以确定哪种是最大的增强肋骨的位置。传播热量。除了对流传热特性外，还对流动的发展进行了详细分析。结果表明，流动行为随着肋的存在而显着变化。此外，传热研究表明，两个最佳的肋骨位置可确保传热改善。