对二维平行平板通道入口段内设置协同式折流翅片的层流换热和流动特性进行了数值模拟.研究了翅片倾角以及通道长高比L/H对换热和阻力特性的影响.研究的Re数范围为100～1000.在翅片倾角β=0°～21.8°范围内,通道内平均Nu数随翅片倾角β的增大而单调增大,随通道长度增大而单调减小.如果从相同泵功下强化效果来评价,则是小倾角翅片较优,并且随Re数增大强化效果减弱.另外,分析表明,场的协同确实与换热率密切相关.
参考文献
| [1] | Z X Yuan .Numerical Study of Periodically Turbulent Flow and Heat Transfer in Channel with Transverse Fin Arrays[J].Numerical Methods For Heat and Fluid Flow,2000,10(08):842-861. |
| [2] | E M Sparrow;W Q Tao .Enhanced Heat Transfer in a Flat Rectangular Duct with Stream Wise-Periodic Disturbances at one Principal Wall[J].Journal of Heat Transfer-Transactions of The ASME,1983,105(04):851-861. |
| [3] | Zhong-Xian Yuan;Wen-Quan Tao;Qiu-Wang Wang .Numerical prediction for laminar forced convection heat transfer in parallel-plate channels with streamwise-periodic rod disturbances[J].International Journal for Numerical Methods in Fluids,1998(9):1371-1387. |
| [4] | 苑中显,张建国,姜明健.变壁温管内对流换热场协同优化分析[J].中国科学E辑,2004(09):1003-1010. |
| [5] | 过增元.对流换热的物理机制及其控制：速度场与热流场的协同[J].科学通报,2000(19):2118-2122. |
| [6] | 苑中显 .用于燃气轮机叶片内冷的新型强化方法及冲击冷却的研究[D].西安交通大学,1997. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%