| 竖壁传热对方腔内Benard对流的影响 |
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| 引用本文： | 王建刚,杨茉,郑臻轶,章立新,王治云. 竖壁传热对方腔内Benard对流的影响[J]. 工程热物理学报, 2007, 28(1): 89-91 |
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| 作者姓名： | 王建刚 杨茉 郑臻轶 章立新 王治云 |
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| 作者单位： | 上海理工大学动力学院,上海,200093;上海理工大学动力学院,上海,200093;上海理工大学动力学院,上海,200093;上海理工大学动力学院,上海,200093;上海理工大学动力学院,上海,200093 |
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| 基金项目： | 国家自然科学基金 , 上海市重点学科建设项目 |
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| 摘 要： | 本文采用具有QUICK差分格式的SIMPLE算法对边界竖壁传热的方腔内空气Benard对流进行了数值计算,根据计算结果探讨了竖壁传热对Benard对流的影响.计算表明,在所考虑的几何和物理条件下,所有竖壁绝热时,腔内流体形成平行与短轴的多个涡卷;竖壁存在传热时,腔内流体形成平行于长轴的两个涡卷,并且平行于长轴竖壁的传热热流方向相反时,涡卷的旋转方向也相反;垂直于长轴蛏壁的传热对近壁附近的流动有一定影响.
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| 关 键 词： | Benard对流 方腔 数值模拟 |
| 文章编号： | 0253-231X(2007)01-0089-03 |
| 修稿时间： | 2006-01-23 |
THE EFFECT OF VERTICAL WALL HEAT TRANSFER ON BENARD CONVECTION IN A RACTANGULAR ENCLOSURE |
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| WANG Jian-Gang,YANG Mo,ZHENG Zhen-Yi,ZHANG Li-Xin,WANG Zhi-Yun. THE EFFECT OF VERTICAL WALL HEAT TRANSFER ON BENARD CONVECTION IN A RACTANGULAR ENCLOSURE[J]. Journal of Engineering Thermophysics, 2007, 28(1): 89-91 |
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| Authors: | WANG Jian-Gang YANG Mo ZHENG Zhen-Yi ZHANG Li-Xin WANG Zhi-Yun |
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| Abstract: | Benard convection of air is numerically computed in a rectangular enclosure with heating vertical walls using SIMPLE algorithm with a QUICK scheme. The effect of vertical wall heat- transfer on Benard convection of air is investigated. The results suggest that longitudinal fluid rolls formed in the enclosure parallel shorter axis of the enclosure when all vertical walls are adiabatic, and the longitudinal rolls parallel the longer axis of enclosure when the vertical walls are heated or cooled. It can be seen that when the direction of heat transfer is changed in the vertical walls paralleling the longer axis of enclosure, the rotation direction of the longitudinal rolls is to be reversed. |
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| Keywords: | Benard convection rectangular enclosure numerical simulation |
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