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螺旋翅片管强化传热数值模拟
发表时间：2016-05-31 浏览量：1976 下载量：625
| 全部作者： | 吴乐凡，向忠，胡旭 |
| 作者单位： | 浙江理工大学机械与自动控制学院 |
| 摘 要： | 通过数值模拟的方式对换热器中螺纹翅片管的结构参数进行分析，并寻找翅片结构参数的最优值。之后根据场协同理论对分析结果进行对比与验证。根据模拟结果，翅片间距对翅片管换热系数的影响最大，其次是翅片高度，翅片厚度对翅片管换热系数的影响最小。同时，在一定范围内，翅片间距降低、翅片高度增加、翅片厚度减小均能够提高翅片管换热系数。随着翅片间距的降低、翅片高度的增加及翅片厚度的减小，翅片管平均压降也将增大，说明翅片管换热系数增大的趋势将逐渐减缓甚至消失。 |
| 关 键 词： | 数值模拟；换热器；参数优化；强化传热 |
| Title： | Numerical Simulation ofHeat Transfer Enhancement of Spiral Finned Tube |
| Author： | WU Lefan, XIANG Zhong, HU Xudong |
| Organization： | Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University |
| Abstract： | In this paper, a numerical simulation model is built for getting the optimum fin structure parameters of screwed pipe in heat exchanger. The analysis results were compared and verified according to the field synergy theory. According to the results of simulation, the spacing of fins has the biggest influence on screwed pipe’s heat exchange coefficient, and the next is the height of fins, the thickness of fins has the lowest influence. At the same time, either decreasing the spacing of fins, increasing the height of fins or decreasing the thickness of fins in a certain range will increase the heat exchange coefficient of the screwed pipe. And with the decrease of fin spacing, the increase of fin height and the decrease of fin thickness, the average pressure drop of the screwed pipe will increase, which means the increasing trend of heat exchange coefficient will slow down, or even disappear. |
| Key words： | numerical simulation; heat exchanger; parameters optimization; heat transfer enhancement |
| 发表期数： | 2016年5月第10期 |
| 引用格式： | 吴乐凡，向忠，胡旭. 螺旋翅片管强化传热数值模拟[J]. 中国科技论文在线精品论文，2016，9（10）：1028-1034. |
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