水平管外液体成膜厚度是反映管外液体流动情况的重要参数之一.本文用数值模拟的方法,通过计算不同条件下的液膜厚度来研究冷态情况下水平管降膜蒸发器管外液体流动的影响凶素.计算结果表明:液体的初始流速和管间距对蒸发器底部蒸发管管外液体的流动影响比较明显,要增大整个降膜蒸发器中成柱状流的管排范围,需同时考虑流速及管间距的影响,且二者的变化对成柱状流的管排数的影响趋势相反.
参考文献
| [1] | Ribatski G;Jacobi A M .Falling-film Evaporation Oil Horizontal Tubes a Critical Review[J].International Journal of Refrigeration-Revue Internationale du Froid,2005,28:635-653. |
| [2] | Thome J R.Engineering Databook Ⅲ[M].Switzerland:Wolverine Tube.Inc,2004:244-248. |
| [3] | Rogers J T .Laminar Falling Film Flow and Heat Transfer Characteristics on Horizontal Tubes[J].Canadian Journal of Chemical Engineering,1981,59:213-222. |
| [4] | Rogers J T;Goindi S S .Experimental Laminar Falling Film Heat nansfer Coefficient on a Large Diameter Horizontal Tube[J].Canadian Journal of Chemical Engineering,1989,67:560-568. |
| [5] | D. GSTOEHL;J. F. ROQUES;P. CRISINEL;J. R. THOME .Measurement of Falling Film Thickness Around a Horizontal Tube Using a Laser Measurement Technique[J].Heat Transfer Engineering,2004(8):28-34. |
| [6] | 许莉,王世昌,王宇新,凌毅.水平管外壁液膜流动状态及其对传热的影响[J].化工学报,2002(06):555-559. |
| [7] | Mohamed AMI .Flow behavior of liquid falling film on a horizontal rotating tube[J].Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics,2007(4):325-332. |
| [8] | 刘振华;朱群志 .水平传热管外过冷水垂膜强制对流换热特性[J].上海交通大学学报,1998,32(07):70-74. |
| [9] | Jesse D;Garimella K S .Simulation of Pendant Droplets and Falling Frims on Horizontal Tube Absorbers[J].Journal of Heat Trailsfer,2004,126:1003-1013. |
| [10] | Rider W J;Kothe D B .Reconstructing Volume Tracking[J].Journal of Computational Physics,1998,141(02):112-152. |
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%