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首页> 外文期刊>Nonlinear Analysis : Modelling and Control >Unsteady Oscillatory Flow and Heat Transfer in a Horizontal Composite Porous Medium Channel
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Unsteady Oscillatory Flow and Heat Transfer in a Horizontal Composite Porous Medium Channel

机译：水平复合多孔介质通道中的非稳态振荡流动和传热

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The problem of unsteady oscillatory .ow and heat transfer in a horizontalcomposite porous medium is performed. The .ow is modeled using the Darcy-Brinkmanequation. The viscous and Darcian dissipation terms are also included in the energyequation. The partial differential equations governing the .ow and heat transfer aresolved analytically using two-term harmonic and non-harmonic functions in both regionsof the channel. Effect of the physical parameters such as the porous medium parameter,ratio of viscosity, oscillation amplitude, conductivity ratio, Prandtl number and the Eckertnumber on the velocity and/or temperature fields are shown graphically. It is observedthat both the velocity and temperature fields in the channel decrease as either of the porousmedium parameter or the viscosity ratio increases while they increase with increases inthe oscillation amplitude. Also, increasing the thermal conductivity ratio is found tosuppress the temperature in both regions of the channel. The effects of the Prandtl andEckert numbers are found to decrease the thermal state in the channel as well
机译：进行了水平复合多孔介质中不稳定的流动和传热问题。 .ow是使用Darcy-Brinkman方程建模的。能量方程还包括粘性和达西耗散项。使用通道的两个区域中的二次谐波和非谐波函数，解析地解决了控制流动和传热的偏微分方程。以图形方式显示了诸如多孔介质参数，粘度比，振荡幅度，电导率，普朗特数和埃克特数等物理参数对速度和/或温度场的影响。观察到，通道中的速度场和温度场均随着多孔介质参数或粘度比的增加而减小，而随着振动幅度的增加而增加。而且，发现增加热导率比可以抑制通道两个区域中的温度。发现Prandtl和Eckert数的影响也降低了通道中的热态

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