倾斜盖驱动腔内倾斜和正弦加热对磁对流影响的数值研究

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
S. Sivanandam, Bhuvaneswari Marimuthu
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引用次数: 3

摘要

目的数值分析是在外磁场不变的情况下,考察下壁温度为正弦曲线的倾斜盖驱动方形室中对流的集体效应和热能传输。盒子的左右两侧都放置了隔热材料,以增加外壳的有效空间体积。天花板墙壁处的热状况保持低于地板上的热状况。设计/方法/方法有限体积法用于离散(无量纲)方程组来控制模型。传热率是通过调节各种变量来测量的,例如理查森数-哈特曼数、外壳的倾斜度。发现当外壳倾斜和磁场强度变化时,外壳对流的流动行为在自然对流中受到更大的影响。由于Hartmann数和Richardson数的增加,整体传热率降低。实际意义本研究的结果对电子设备的冷却非常有用。社会含义该研究模型对热科学界和建模领域都很有用。独创性/价值这项研究是一项关于正弦热源倾斜室内混合对流的新工作。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical study on influence of inclination and sinusoidal heating on magneto-convection in an inclined lid-driven cavity
PurposeThe numerical analysis is to scrutinize the collective effect of convective current along with the thermal energy transport in an inclined lid-driven square chamber with sine curve based temperature at the lower wall in the existence of unchanging external magnetic field. Insulation has been placed on the left and right of the box to increase the effective space volume of the shell. The thermal condition at ceiling wall is kept lower than the one on the floor.Design/methodology/approachThe finite volume method employs to discretize (non-dimensional) system of equations govern the model. The heat transfer rate is measured by adjusting various variables, such as the Richardson number Hartmann number, inclination of an enclosure.FindingsThe flow behavior of enclosure convection is more highly influenced within the natural convection when enclosure inclination varies as well as magnetic field strength. The overall heat transfer rate decreases due to increase in both the Hartmann number as well as Richardson number.Practical implicationsThe results of the present study are very useful to the cooling of electronic equipments.Social implicationsThe study model is useful to the thermal science community and modelling field.Originality/valueThis research is a novel work on mixed convection flow in an inclined chamber with sinusoidal heat source.
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来源期刊
CiteScore
3.70
自引率
5.00%
发文量
60
期刊介绍: Multidiscipline Modeling in Materials and Structures is published by Emerald Group Publishing Limited from 2010
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