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首页> 外文期刊>Applied Mechanics and Engineering >FLOW AND HEAT TRANSFER OF COUPLE STRESS AND VISCOUS FLUIDS IN A VERTICAL CHANNEL
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FLOW AND HEAT TRANSFER OF COUPLE STRESS AND VISCOUS FLUIDS IN A VERTICAL CHANNEL

机译：垂直通道中耦合应力和粘性流体的流动和传热

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摘要

The problem of steady, laminar, fully developed flow and heat transfer of viscous and couple stress fluids in a vertical channel is investigated. The transport properties of the fluids in both the regions are assumed to be constant. The walls of the channel are considered to be isothermal. The governing momentum and energy equations are coupled and nonlinear due to the buoyancy effects. The basic equations are solved analytically using the regular perturbation method and numerically using the Runge-Kutta-Gill method. The results are represented graphically for different values of the couple stress parameter, viscosity ratio, width ratio, coefficient of thermal expansion ratio, density ratio, conductivity ratio, ratio of the Grashof number and Reynolds number and Eckert number on velocity and temperature distributions. In addition, results for the Nusselt number are computed for different values of the physical parameters and presented in a tabular form. It is found that the effect of the couple stress parameter is to promote the motion of the fluid.
机译：研究了垂直通道中粘性流体和耦合应力流体的稳定，层流，充分发展的流动和传热问题。假定在两个区域中流体的传输特性是恒定的。通道壁被认为是等温的。由于浮力效应，控制动量和能量方程是耦合的并且是非线性的。基本方程是使用常规扰动方法解析求解的，而使用Runge-Kutta-Gill方法则是数值求解的。对于偶合应力参数，粘度比，宽度比，热膨胀系数比，密度比，电导率，格拉斯霍夫数与雷诺数和埃克特数与速度和温度分布之比的不同值，用图形表示结果。另外，针对物理参数的不同值计算出Nusselt数的结果，并以表格形式显示。发现耦合应力参数的作用是促进流体的运动。

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