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首页> 外文会议>BSME International Conference on Thermal Engineering >MHD Natural Convection in Open Inclined Square Cavity with a Heated Circular Cylinder
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MHD Natural Convection in Open Inclined Square Cavity with a Heated Circular Cylinder

机译：MHD自然对流在开口倾斜方腔中，具有加热的圆柱

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MHD natural convection in open cavity becomes very important in many scientific and engineering problems, because of it's application in the design of electronic devices, solar thermal receivers, uncovered flat plate solar collectors having rows of vertical strips, geothermal reservoirs, etc. Several experiments and numerical investigations have been presented for describing the phenomenon of natural convection in open cavity for two decades. MHD natural convection and fluid flow in a two-dimensional open inclined square cavity with a heated circular cylinder was considered. The opposite wall to the opening side of the cavity was first kept to constant heat flux q, at the same time the surrounding fluid interacting with the aperture was maintained to an ambient temperature T∞. The top and bottom wall was kept to low and high temperature respectively. The fluid with different Prandtl numbers. The properties of the fluid are assumed to be constant. As a result a buoyancy force is created inside the cavity due to temperature difference and natural convection is formed inside the cavity. The Computational Fluid Dynamics (CFD) code are used to discretize the solution domain and represent the numerical result to graphical form. Triangular meshes are used to obtain the solution of the problem. The streamlines and isotherms are produced, heat transfer parameter Nu are obtained. The results are presented in graphical as well as tabular form. The results show that heat flux decreases for increasing inclination of the cavity and the heat flux is a increasing function of Prandtl number Pr and decreasing function of Hartmann number Ha. It is observed that fluid moves counterclockwise around the cylinder in the cavity. Various recirculations are formed around the cylinder. The almost all isotherm lines are concentrated at the right lower corner of the cavity. The object of this work is to develop a Mathematical model regarding the effect of MHD natural convection flow around a heated circular cylinder at the centre of an inclined open square cavity.
机译：MHD自然对流在开放腔内在许多科学和工程问题中变得非常重要，因为它在电子设备设计中的应用，太阳能热接收器，未覆盖的平板太阳能收集器具有行的垂直条带，地热储层等。几个实验和已经提出了数值调查，用于描述开腔中的自然对流现象二十年。考虑了具有加热圆柱体的二维开口倾斜方腔中的MHD自然对流和流体流动。第一壁到腔的开口侧首先保持恒定热通量Q，同时将与孔的围绕流体相互作用保持在环境温度T 1。顶部和底壁分别保持低温和高温。具有不同的prandtl数字的液体。假设流体的性质是恒定的。结果，由于温度差异，在腔内形成自然对流，因此在腔内产生浮力力。计算流体动力学（CFD）代码用于离散化解决方案域并表示与图形形式的数值结果。三角网格用于获得问题的解决方案。生产流线和等温线，获得传热参数Nu。结果以图形和表格形式呈现。结果表明，用于增加腔的倾斜度的热通量减小，热通量是Prandtl数Pr的越来越多的函数，以及Hartmann Number HA的降低功能。观察到，流体在腔中的圆柱体周围逆时针移动。在气缸周围形成各种再循环。几乎所有等温线都集中在腔的右下角。本作作品的目的是开发关于MHD自然对流流动在倾斜开口方腔中心的加热圆筒周围的影响的数学模型。

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