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首页> 外文期刊>Journal of Heat Transfer >Numerical Investigations on Heat Transfer of Self-Sustained Oscillation of a Turbulent Jet Flow Inside a Cavity
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Numerical Investigations on Heat Transfer of Self-Sustained Oscillation of a Turbulent Jet Flow Inside a Cavity

机译：腔内湍流射流自持振荡的传热数值研究

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摘要

Computations of heat transfer and fluid flow of a plane isothermal fully developed turbulent plane jet flowing into a rectangular hot cavity are reported in this paper. Both velocity and temperature distributions are computed by solving the two-dimensional unsteady Reynolds-averaged Navier-Stokes (URANS) equations. This approach is based on one-point statistical modeling using the energy-specific dissipation (k-ω) turbulence model. The numerical predictions are achieved by finite volume method. This problem is relevant to a wide range of practical applications including forced convection and the ventilation of mines, enclosure, or corridors. The structural properties of the flow and heat transfer are described for several conditions. An oscillatory regime is evidenced for particular jet location, inducing for each variable a periodic behavior versus time. The jet flapping phenomena are detailed numerically by the instantaneous streamlines contours and the vorticity magnitude contours within one period of oscillation. The heat transfer along the cavity walls is also periodic. Time average of mean Nusselt number is correlated according with some problem parameters.
机译：本文报道了平面等温完全展开的湍流平面射流流入矩形热腔的传热和流体流动的计算。通过求解二维非稳态雷诺平均Navier-Stokes（URANS）方程，可以计算速度和温度分布。该方法基于使用能量特定耗散（k-ω）湍流模型的单点统计模型。数值预测是通过有限体积法实现的。这个问题与广泛的实际应用有关，包括强制对流以及矿井，围墙或走廊的通风。描述了几种条件下的流动和热传递的结构特性。对于特定的射流位置，证明存在振荡状态，从而为每个变量诱导了周期性行为随时间变化。在一个振荡周期内，瞬时流线轮廓和涡度幅值轮廓在数值上详细描述了喷气拍打现象。沿着腔壁的热传递也是周期性的。平均Nusselt数的时间平均值与一些问题参数相关。

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  • 来源
    《Journal of Heat Transfer》 |2015年第10期|101702.1-101702.10|共10页
  • 作者

    Farida Iachachene; Amina Mataoui; Yacine Halouane;

  • 作者单位

    Department of Physics, Faculty of Sciences, University M'hamed Bouguerra Boumerdes UMBB, Boumerdes, Algeria;

    Theoretical and Applied Laboratory of Fluid Mechanics, University of Sciences and Technology Houari Boumedienne-USTHB, B.P. 32, Bab Ezzouar, Algiers 16111 Al Alia, Algeria;

    Department of Energetic, Faculty of Engineering Sciences, University M'hamed Bouguerra Boumerdes UMBB, Boumerdes, Algeria;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    impinging jet; Nusselt number; self-oscillation; turbulence; cavity; heat transfer;

    机译：射流努塞尔数自激振荡湍流腔传播热量;

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