| U型管内部流场运动数值分析 |
| |
| 引用本文： | 曹永,宋文武,符杰. U型管内部流场运动数值分析[J]. 制冷与空调(四川), 2014, 0(5): 611-614 |
| |
| 作者姓名： | 曹永 宋文武 符杰 |
| |
| 作者单位： | 西华大学能源与环境学院,成都610039 |
| |
| 基金项目： | 流体及动力机械省部共建教育部重点实验室资助项目（SBZDPY-11-8、SBZDPY-11-4）; 四川省教育厅重点资助项目（11ZA279） |
| |
| 摘 要： | 空调制冷器U型管内部流动特性对空调制冷器对流换热的影响很大,利用FLUENT软件,选用RNG k-ε湍流模型对U型管内部流场进行数值分析,得出了在U型管弯管处的流体具有二次流以及外侧流速和压力大于内侧的流动特性,在弯曲段内、外侧边界层厚度出现差异,解释了空调制冷器中U型管内外侧换热的差异,对改善制冷器性能以及制冷器的设计具有一定的参考价值。
|
| 关 键 词： | U型管 数值分析 边界层 对流换热 |
Numerical Simulation of Inner Flow in U Bending Duct |
| |
| Cao Yong,Song Wenwu,Fu Jie. Numerical Simulation of Inner Flow in U Bending Duct[J]. Refrigeration & Air-condition, 2014, 0(5): 611-614 |
| |
| Authors: | Cao Yong Song Wenwu Fu Jie |
| |
| Affiliation: | ( School of Energy and Environment, Xihua University, Chengdu, 610039 ) |
| |
| Abstract: | Theinternal flow characteristics of U bending duct has a great influence on the convective heat transfer of air conditioning refrigerator unit. In this paper the RNGk-εturbulence model of FLUENT software is used for the numerical simulation of U bending duct internal flow. The fluid in the U bending duct shows the flow characteristics including secondary flow and the outer pressure and velocity are greater than the inside ones. The inner and outer flow boundary layer thickness are different at the corner of U bending duct, and explained the heat transfer difference inside and outside of U bending duct in air conditioning and refrigeration unit. It has a certain reference value for reasonable design of refrigerator and improves the performance of refrigerator unit. |
| |
| Keywords: | U bending duct numerical simulation boundary layer convective heat transfer |
| 本文献已被 维普 等数据库收录！ |
|
