波形板干燥器内液膜破裂的试验研究  

Experimental Study on Rupture of Liquid Film in Corrugated-plate Dryer

作　　者：戴俊 陈贻炫 田瑞峰 

机构地区：[1]驻葫芦岛431厂军代室 [2]哈尔滨工程大学核安全与仿真技术国防重点学科实验室

出　　处：《电站系统工程》2017年第2期17-19,共3页Power System Engineering

摘　　要：采用平面激光诱导荧光剂法,对波形板内壁降膜厚度进行测量。实验研究表明,液膜厚度与雷诺数符合幂函数关系,且随着液膜流量的增大,横向液膜高度的极大值从边缘两侧逐渐向中心区域移动。同时在降膜厚度测量的基础上,对波形板内液膜破裂的临界速度进行了研究,得出了液膜破裂的临界速度与厚度为负相关的关系。The planar laser-induced fluorescence technique was used to measure the thickness of the liquid film in the corrugated-plate dryer. The results showed that the liquid film thickness can be expressed as power function of Reynolds number, and two extreme values of the thickness close gradually toward the center area of the film from the edge, with the increase of liquid film flow. On the basis of the thickness measurement, the re-entrainment in the corrugated plate was studied. It was concluded that the critical gas velocity is inversely related to the thickness.

关 键 词：液膜厚度 波形板干燥器 二次携带 两相流 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]