用统计方法研究未充分发展弹状流动  

Investigations on flow parameters of un-fully developed gas-liquid slug flow with statistical means

作　　者：刘诗明[1] 于志家[1] 

机构地区：[1]大连理工大学化学工程研究所,辽宁大连116012

出　　处：《化学工程》2006年第1期20-23,共4页Chemical Engineering(China)

摘　　要：在一内径19 mm、长2 m的垂直有机玻璃管内,采用自制的电导探针对未充分发展的气-液二相弹状流中的弹状气泡上升速度、液塞上升速度、弹状气泡长度和液塞长度进行了测量。得到了各自随表观气速或表观液速的变化规律。结果表明:在未充分发展的弹状流状态下,弹状气泡的上升速度略高于液塞的上升速度:弹状气泡长度随表观气速的增大而增大,随表观液速的增大而减小。文章对弹状气泡长度进行了统计分析。未充分发展弹状流中弹状气泡长度符合正态分布律。Flow parameters such as the rising velocities and the lengths of measured for un-fully developed gas-liquid slug flow in a vertical plexiglass Taylor bubble and liquid slug were tube of Ф25 × 3. 2m in length, with self-made conductivity probes. The resuhs showed some regular patterns with the variation of the superficial gas or liquid/low velocities. In the un-fully developed slug/low region, the Taylor bubble rose a little faster than liquid slug does. The length of Taylor bubble was increasing with superficial gas velocity, and decreasing with superficial liquid velocity. Statistical method was employed to analyze the length distribution of Taylor bubble. The length of Taylor bubble obeys Normal Distribution.

关 键 词：气液二相 弹状流 电导 统计方法 

分 类 号：TQ021.1[化学工程]