本文对具有一个内置发热体的二维倾斜开口方腔自然对流问题进行了数值模拟.计算参数取值为: Prandtl数0.7,Rayleigh数范围从103～108,倾斜角度从0°～90°数值结果表明,流动形式根据开口界面底部流体的流向分为两种流动形式.平均Nusselt数为Rayleigh数的增函数,增幅亦随Rayleigh数的增加而增加.当Ra<106时,平均Nusselt数受到ψ的影响较小,当Ra≥106时,平均Nusselt数取得最大值的ψ为45°.
参考文献
| [1] | Chan Y L;Tien C L .A Numerical Study of Two-dimensional Laminar Natural Convection in Shallow Open Cavities[J].International Journal of Heat and Mass Transfer,1985,28(03):603-612. |
| [2] | Chan Y L;Tien C L .Laminar Natural Convection in Shal-low Open Cavities[J].Journal of Heat Transfer,1986,108:305-309. |
| [3] | O. Polat;E. Bilgen .Natural convection and conduction heat transfer in open shallow cavities with bounding walls[J].Heat and mass transfer,2005(10):931-939. |
| [4] | A. Muftuoglu;E. Bilgen .Conjugate heat transfer in open cavities with a discrete heater at its optimized position[J].International Journal of Heat and Mass Transfer,2008(3/4):779-788. |
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%