本文针对二维方腔中非稳态自然对流过程进行了数值研究,方腔一侧被等温冷却,另一侧受到三块热板脉动加热,热板温度满足两种不同规律,脉动周期0.01 s＜r＜500 s,脉动大小0＜n＜0.40,所研究的自然对流问题取Ra=106,工质为空气(Pr=0.70).研究结果表明:方腔中冷板瞬时对流换热量与相应稳态时有很大差异;在一定条件下,热板温度脉动周期和脉动量对冷板的换热量均有很大的影响.
参考文献
| [1] | Patterson J;Imberger J .Unsteady Natural Convection in a Rectangular Cavity[J].Journal of Fluid Mechanics,1980,100(01):65-86. |
| [2] | Nicolette V F;Yang K T;Lloyd J R .Transient Cooling by Natural Convction in a Two Dimensional Square Enclosure[J].International Journal of Heat and Mass Transfer,1985,28(09):1721-1732. |
| [3] | Fu W S;Perng J C;Shieh W J .Transient Natural Convection in an Enclosure Partitioned by an Adiabatic Baffle[J].Numerical Heat Transfer Part A,1989,36(04):325-350. |
| [4] | Fu W S;Perng J C;Shieh W J .Transient Laminar Natural Convection in Partitioned Enclosure Heated by Uniform Flux[J].Warme und Stoffubertragung,1990,25(03):233-243. |
| [5] | Ling C M;Tao W Q .TwoDimensionalNumericalSimulationofTransientNaturalConvectioninFreezer[J].Journal of Thermal Science,1993,2(02):171-178. |
| [6] | E.K.LAKHAL;M.HASNAOUI;P.VASSEUR .Numerical study of transient natural convection in a cavity heated periodically with different types of excitations[J].International Journal of Heat and Mass Transfer,1999(21):3927-3941. |
| [7] | 陶文铨.数值传热学[M].西安:西安交通大学出版社,2002 |
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%