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首页> 外文期刊>Journal of Heat Transfer >Computation of Flow and Heat Transfer in Rotating Rectangular Channels (AR=4:1) With Pin-Fins by a Reynolds Stress Turbulence Model
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Computation of Flow and Heat Transfer in Rotating Rectangular Channels (AR=4:1) With Pin-Fins by a Reynolds Stress Turbulence Model

机译：雷诺应力湍流模型计算带销钉的矩形旋转通道（AR = 4：1）中的流动和传热

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摘要

Computations with multi-block chimera grids were performed to study the three-dimensional turbulent flow and heat transfer in a rotating rectangular channel with staggered arrays of pin-fins. The channel aspect ratio (AR) is 4:1, the pin length to diameter ratio (HID) is 2.0, and the pin spacing to diameter ratio is 2.0 in both the stream-wise (S_1/D) and span-wise (S_2/D) directions. A total of six calculations have been performed with various combinations of rotation number, Reynolds number, and coolant-to-wall density ratio. The rotation number and inlet coolant-to-wall density ratio varied from 0.0 to 0.28 and from 0.122 to 0.20, respectively, while the Reynolds number varied from 10,000 to 100,000. For the rotating cases, the rectangular channel was oriented at 150 deg with respect to the plane of rotation to be consistent with the configuration of the gas turbine blade. A Reynolds-averaged Navier-Stokes (RANS) method was employed in conjunction with a near-wall second-moment turbulence closure for detailed predictions of mean velocity, mean temperature, and heat transfer coefficient distributions.
机译：进行了多块嵌合体网格的计算，以研究带有交错排列的针状翅片的旋转矩形通道中的三维湍流和热传递。通道长宽比（AR）为4：1，引脚长度与直径之比（HID）为2.0，并且在流方式（S_1 / D）和跨度方向（S_2）中引脚间距与直径之比均为2.0 / D）方向。使用转数，雷诺数和冷却液与壁的密度比的各种组合进行了总共六次计算。转数和入口冷却剂与壁的密度比分别从0.0到0.28和0.122到0.20变化，而雷诺数从10,000到100,000变化。对于旋转壳体，矩形通道相对于旋转平面以150度定向，以与燃气轮机叶片的构造一致。使用雷诺平均Navier-Stokes（RANS）方法与近壁第二矩湍流闭塞相结合，可详细预测平均速度，平均温度和传热系数分布。

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