摘要
主要研究不同尺寸窄缝环形管内R 1 1 3垂直向上单相和两相流动沸腾时的摩擦阻力特性。研究发现 ,无论是单相还是两相流动都不同于普通管内流动 ,流体在窄缝环形管内流动的转变雷诺数Re为 50 0～ 1 0 0 0 ,两相流动摩擦阻力比普通圆管内的大。研究获取了重要的实验数据 ,并提出了计算窄缝环形管内单相和两相流动摩擦阻力的关系式 ,试验值与计算值的最大相对误差不超过 7 2 %。
The friction resistance performance of the single phase flow and double phase flow was studied when R 113 rized vertically in the narrow gap annular tube with various sizes, both single phase flow and double phase flow were different from the common flow in tubes. The transition Re Number of the flow in the narrow gap was 500 1 000, the friction resistance of double phase flow was bigger than that of the flow in common cycle tubes. Some important data were described,and the relation was proposed for calculating the friction resistance of the single phase flow and the double phase flow in the narrow gap tube annular, the biggest relative error between the testing value and the calculating value was not more than 7.2%.
出处
《化工机械》
CAS
2001年第2期67-70,112,共4页
Chemical Engineering & Machinery
基金
国家自然科学基金!资助项目 ( 59995460 )
关键词
窄缝环形管
摩擦阻力
狭窄空间
单相流动
两相流动
传热
Narrow Gap Annular Tube, Friction Resistance, Narrow Space, Single Phase Flow, Double Phase Flow
