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Comparative Investigation on Heated Swirling Jets Using Experimental and Numerical Computations

机译:热旋流射流的实验和数值计算比较研究

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摘要

The purpose of this paper is to investigate both experimentally and numerically the influence of various parameters on the different blowing configurations of multiple swirling jets. Flow rate was adjusted at Reynolds numbers ranging from 10~4 to 3 × 10~4. The current study is carried out under uniform heat flux condition for each diffuser, at Reynolds number of 3 × 10~4, with air being the working fluid. Experiments concerning the fusion of several jets show that the resulting jet is clearly more homogenized under swirling influence. Afterward, numerical simulation is also carried out using the finite-volume computational fluid dynamics solver FLUENT 6.3, in which the standard k - ε and the Reynolds stress turbulence model (RSM) were used for turbulence computations. The findings of this study show that the diffuser vane angle and a balance and an imbalance in temperature between the central and peripheral jets affect the quality of the thermal homogenization of the ambiance. Overall predictions obtained with the RSM model are in better agreement with the experimental data compared to those of the standard k - ε model.
机译:本文的目的是在实验和数值上研究各种参数对多重旋流喷嘴不同吹气形态的影响。将流量调整为雷诺数范围从10〜4到3×10〜4。当前的研究是在均匀的热通量条件下对每个扩散器进行的,雷诺数为3×10〜4,空气为工作流体。关于几种射流融合的实验表明,在旋流的影响下,所得射流显然更加均匀。之后,还使用有限体积计算流体动力学求解器FLUENT 6.3进行了数值模拟,其中使用标准k-ε和雷诺应力湍流模型(RSM)进行湍流计算。这项研究的结果表明,扩压器叶片角度以及中央和周边射流之间的平衡和温度不平衡会影响环境的热均质性。与标准k-ε模型相比,使用RSM模型获得的总体预测与实验数据更加吻合。

著录项

  • 来源
    《Heat Transfer Engineering》 |2015年第4期|43-57|共15页
  • 作者单位

    Universite de Chief, Chief, Algerie;

    Universite d'Artois, Laboratoire Genie Civil et geo-Environnement (EA 4515), Technoparc Futura, F-62400, Bethune, France Universite Lille Nord de France, F-59000 Lille, France;

    Universite de Chief, Chief, Algerie;

    Universite de Chief, Chief, Algerie;

  • 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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