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首页> 外文期刊>Journal of Heat Transfer >Oscillatory Flow Induced Developing Convection in a Shallow Enclosure: Effect of Sinusoidal Bottom Wall Temperature
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Oscillatory Flow Induced Developing Convection in a Shallow Enclosure: Effect of Sinusoidal Bottom Wall Temperature

机译:振荡流在浅外壳中引起对流发展:正弦底壁温度的影响

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摘要

The influence of hydrodynamically developing nonzero mean acoustic streaming motion on transient convective heat transfer in an air-filled rectangular enclosure is studied numerically. The enclosure is two-dimensional with sinusoidal bottom wall spatial temperature distribution. The oscillatory flow under relatively large Womersley number regime conditions is actuated by the periodic vibrations of the enclosure side wall. The side walls of the enclosure are adiabatic, while the top wall is isothermal. The compressible form of the Navier-Stokes equations is considered to predict the oscillatory- and time-averaged mean flow fields. A control-volume method based explicit computational scheme is used to simulate the convective transport in the enclosure. The longitudinal and the transverse temperature gradients strongly affect the flow structure in the enclosure. The mean fluid motion alters the heat transfer behavior compared to the pure conduction.
机译:数值研究了流体动力学发展的非零平均声流运动对充气矩形箱体内瞬态对流换热的影响。外壳是二维的,具有正弦形的底壁空间温度分布。在相对较大的沃默斯利数态条件下的振荡流是由外壳侧壁的周期性振动引起的。外壳的侧壁是绝热的,而顶壁是等温的。 Navier-Stokes方程的可压缩形式被认为可以预测振荡平均时间和平均时间流场。基于控制量方法的显式计算方案用于模拟围护结构内的对流传输。纵向和横向温度梯度强烈影响外壳中的流动结构。与纯传导相比,平均流体运动会改变热传递行为。

著录项

  • 来源
    《Journal of Heat Transfer》 |2020年第3期|031801.1-031801.13|共13页
  • 作者单位

    Department of Mechanical Engineering TOBB University of Economics and Technology Sogutozu Caddesi No: 43 Ankara 06560 Turkey;

  • 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
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