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首页> 外文期刊>Applied Mechanics and Engineering >OSCILLATORY HARTMANN TWO-FLUID FLOW AND HEAT TRANSFER IN A HORIZONTAL CHANNEL
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OSCILLATORY HARTMANN TWO-FLUID FLOW AND HEAT TRANSFER IN A HORIZONTAL CHANNEL

机译：水平通道中的振荡HARTMANN两流体流动和传热

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摘要

An unsteady Hartmann flow of two immiscible fluids through a horizontal channel with time-dependent oscillatory wall transpiration velocity is investigated. One of the fluids is assumed to be electrically conducting while the other fluid and the channel walls are assumed to be electrically insulating. Separate solutions for each fluid are obtained and these solutions are matched at the interface using suitable matching conditions. The partial differential equations governing the flow and heat transfer are transformed to ordinary differential equations and closed-form solutions are obtained in both fluids' regions of the channel for steady and unsteady conditions. The closed-form results are presented graphically for various values of the Hartmann number, frequency parameter, periodic frequency parameter viscosity and conductivity ratios as well as the Prandtl number to show their effect on the flow and heat transfer characteristics.
机译：研究了两种不混溶流体通过水平通道的时变振动壁蒸腾速度的非恒定Hartmann流。假定其中一种流体是导电的，而另一种流体和通道壁则假定是电绝缘的。获得每种流体的单独溶液，并使用合适的匹配条件在界面上对这些溶液进行匹配。将控制流动和传热的偏微分方程转换为常微分方程，并在稳态和非稳态条件下，在通道的两个流体区域中获得封闭形式的解。封闭形式的结果以图形形式给出了哈特曼数，频率参数，周期频率参数粘度和电导率以及普朗特数的各种值，以显示它们对流动和传热特性的影响。

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