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| 基于有限元方法的横掠椭圆管束流动特性研究 |
| Research on the flow across elliptical tube tanks with the finite-element method |
| 投稿时间：2005-04-17 |
| DOI： |
| 中文关键词: 椭圆管 管束 有限元 流动 |
| 英文关键词:elliptical tube tube tank finite element flow |
| 基金项目: |
| 李大鹏 张利群 赵元松 |
| [1]海军工程大学船舶与动力学院,湖北武汉430033 [2]辽宁石油化工大学计算机系,辽宁抚顺113008 |
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| 中文摘要: |
| 采用有限元数值方法，使用ANSYS有限元软件，对不同流动形式和不同结构的椭圆管束进行了数值研究，得到了不同流速下的流动特性，通过速度分布的等值云图实现了流场的可视化，并与顺排和又排圆管管束进行了比较，对椭圆管束的对流换热状况有了掌握。计算结论表明，只要合理设计椭圆管的长短轴比，就可达到在增大对流换热强度的同时大大降低流动阻力之目的。研究加深了对椭圆管束流动特性的认识，并体现出采用方法对于椭圆管束流动特性的研究非常有效。 |
| 英文摘要: |
| The characteristics of flow across elliptical tube tanks of different configurations and with different flow patterns are investigated numerically using the ANSYS based on the finite-element method. The flow field visualization is realized through the contour maps of velocity distributions. The results obtained are compared with those of in-line and staggered tube banks, through which the convection heat transfer is understood. It is concluded from the numerical study that the flow resistance can be reduced significantly while the convection heat transfer could be improved, provided the ratio of major-axis length to minor-axis length is reasonably selected. The research deepens the knowledge of flow characteristics of elliptical tube tanks, through which the method of numerical simulation proves an effective technique for the investigations on the flow of elliptical tube-banks. |
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