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Computational Fluid Dynamics Investigation of the Thermal Performances of a Swirler with Profiled Blades

机译:计算流体动力学调查旋流器叶片的热性能

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摘要

Numerical simulations were carried out to investigate the swirling decaying flow generated by a novel axial guide vane swirler with profiled blades and no supporting device in a tube and its effect on heat transfer and pressure drop compared to a developed turbulent flow in a no swirl tube. Reynolds number ranged from 10,000 to 200,000. Turbulence was modeled using a k -ω Shear Stress Transport model and a Low-Reynolds approach. The swirling flow enhances significantly the heat transfer locally especially in the developing swirling flow region and globally with an increase of Nusselt number from 1.57 to 1.34 respectively for Reynolds number of 10,000 and 200,000. Pressure drop is also increased up to 2.9 for a Reynolds number of 200,000, however this is relatively low compared to other axial guide vane swirler device encountered in the literature. Furthermore, the Performance Evaluation Criterion of the swirling flow is higher than 1 for both Reynolds number of 10,000 and 30,000.
机译:进行了数值模拟,以研究新型轴向导向叶片旋流器与成型叶片产生的旋转衰变流动,并且在管中没有支撑装置及其对无旋流管中的发育湍流相比的热传递和压降的影响。 Reynolds号码范围从10,000到200,000。 使用k-ω剪切应力传输模型和低雷诺接近模拟湍流。 旋转流动显着增强了局部的热传递,特别是在显影旋流区域和全球范围内,对于雷诺数10,000和20,000的雷诺数分别为1.57至1.34。 对于雷诺数200,000的雷诺数也增加了2.9的压降,然而,与文献中遇到的其他轴向导向叶片旋流装置相比,这相对较低。 此外,旋流的性能评估标准高于10,000和30,000的雷诺数的高于1。

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  • 来源
    《Heat Transfer Engineering》 |2021年第18期|1452-1472|共21页
  • 作者单位

    LAMIH UMR CNRS 8201 Universite Polytechnique Hauts-de-France Valenciennes France Manoir Industries 12 rue des Ardennes BP8401 Pitres 27108 VAL DE REUIL Cedex France;

    LAMIH UMR CNRS 8201 Universite Polytechnique Hauts-de-France Valenciennes France;

    LAMIH UMR CNRS 8201 Universite Polytechnique Hauts-de-France Valenciennes France;

    LAMIH UMR CNRS 8201 Universite Polytechnique Hauts-de-France Valenciennes France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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