用两个X型热膜探针对内径为35 mm的水平管内气液两相泡状流的三维紊流结构进行了准三维测量,得出了沿不同直径的轴向、径向和周向的紊流脉动速度和雷诺应力分布.发现在水平管下部脉动速度和雷诺应力与单相流动时的分布规律相似;在管子上部由于空气泡的存在增强了脉动速度;在某些区域内,周向的脉动值甚至比径向和轴向的相应值还要高.水平气液两相泡状流中雷诺应力-uw不为零,在管子的上部甚至和-uv有相同的量级.给出了由于气泡引起的紊流脉动与总紊流脉动比值沿径向的分布.
参考文献
| [1] | Serizawa A;Kataoka I;Michiyshi I .Turbulence Structure of Air-Water Bubbly Flow-Ⅰ. Measuring Techniques. Int[J].Journal of Multiphase Flow,1975,2:221233. |
| [2] | Wang S K;Lee S J;Jones O C et al.Three-Dimensional Turbulence and Phase Distribution Measurements in Bubbly Two-Phase Flow. Int[J].Journal of Multiphase Flow,1987,13:327-340. |
| [3] | Liu T J;Bankoff S G .Structure of Air-Water Bubbly Flow in a Vertical Pipe-Ⅰ. Liquid Mean Velocity and Turbulence Measurements. Int[J].International Journal of Heat and Mass Transfer,1993,36:1049-1060. |
| [4] | A. Iskandrani;G. Kojasoy .Local void fraction and velocity field description in horizontal bubbly flow[J].Nuclear engineering and design,2001(1/3):117-128. |
| [5] | Sato Y;Sadatomi M;Sekoguchi K .Momentum and Heat Transfer in Two-Phase Bubble Flow-Ⅰ. Int[J].Journal of Multiphase Flow,1981,7:167-177. |
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%