| 空冷凝汽器单元流场的耦合计算 |
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| 引用本文： | 周文平,唐胜利.空冷凝汽器单元流场的耦合计算[J].动力工程,2007,27(5):766-770. |
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| 作者姓名： | 周文平 唐胜利 |
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| 作者单位： | 重庆大学,动力工程学院,重庆,400044 |
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| 摘 要： | 运用计算流体力学的方法,采用多孔介质模型对电厂空冷凝汽器风机和A型框架空气侧流场进行了三维准定常耦合计算,得到了风机在不同转速时空冷单元内部的速度、温度和压力的分布.结果表明:对空冷凝汽器风机和A型框架进行耦合计算较为更合理;冷空气在凝汽器翅片间的分配不均匀,因此优化空气侧的流场分布是提高凝汽器换热效率的措施之一,为凝汽器的优化设计提供了理论依据.
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| 关 键 词： | 能源与动力工程 空冷凝汽器 冷却单元 数值模拟 耦合计算 |
| 文章编号： | 1000-6761（2007）05-766-05 |
| 修稿时间： | 2006-12-25 |
Coupled Flow-Field Calculation of a Direct Air-cooled Condenser's Component Unit |
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| ZHOU Wen-ping,TANG Sheng-li.Coupled Flow-Field Calculation of a Direct Air-cooled Condenser''''s Component Unit[J].Power Engineering,2007,27(5):766-770. |
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| Authors: | ZHOU Wen-ping TANG Sheng-li |
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| Affiliation: | College of Power Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | A three dimensional quasi-steady coupled air flow field calculation is carried out,for the air-cooled condenser's air fan and the A-shaped framework,in one power plant,by using the coupled flow-field calculation.The fin side of the condenser tubes is simplified by assuming a porous medium.The distribution of velocity,temperature and pressure,within the air-cooled unit,is then obtained for different rotary speeds of the fan.This all may serve as a reference basis for optimally designing air-cooled condensers. |
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| Keywords: | energy and power engineering air-cooled condenser cooling unit numerical simulation coupled calculation |
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