Abstract The effect of radial flow injection on the heat transfer characteristics of a Taylor–Couette–Poiseuille flow in an annulus is numerically investigated using the SST k-ω turbulence model. The ranges of the axial Reynolds number (ReA) and the rotational Reynolds number (ReΩ) are and respectively. For every combination of axial and rotational Reynolds number, flow is injected radially into the air gap through a rectangular duct located on the inner cylinder with the injection rate which varies from 0.02 to 0.14. Airflow in the air gap, before the injection, is in a fully developed condition and the effect of radial injection on the heat transfer of inner and outer cylinder is investigated in terms of the Nusselt number. In the studied range, radial injection increases the averaged Nusselt number up to 24% on the inner cylinder and up to 27% on the outer cylinder. In order to compare the heat transfer increase due to the radial injection, Nu* is defined as the difference between local Nusselt and Nusselt number of the fully developed flow happening at the same configuration without injection, and it is shown that though the trend of local Nusselt on the inner and outer cylinder is different, the averaged Nu* on both surfaces follows the same trend.

中文翻译：

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径向注入对 Taylor-Couette-Poiseuille 流传热的影响

摘要 使用 SST k-ω 湍流模型数值研究了径向流注入对环空中 Taylor-Couette-Poiseuille 流传热特性的影响。轴向雷诺数 (ReA) 和旋转雷诺数 (ReΩ) 的范围分别为 和 。对于轴向和旋转雷诺数的每种组合，流体通过位于内缸上的矩形管道径向注入气隙，注入速率从 0.02 到 0.14 不等。喷射前气隙中的气流处于充分发展状态，并根据努塞尔数研究径向喷射对内外筒传热的影响。在研究范围内，径向喷射使内缸的平均努塞尔数增加了 24%，外缸的平均努塞尔数增加了 27%。为了比较径向注入引起的传热增加，Nu*被定义为在没有注入的情况下发生在相同构型下完全发展流动的局部努塞尔数和努塞尔数之间的差异，这表明尽管局部的趋势内外圆柱上的 Nusselt 不同，两个表面上的平均 Nu* 趋势相同。