低温推进剂弹状汽泡形成过程的数值模拟研究  

Numerical simulation of slug bubble formation in a vertical cryogenic propellant pipe

作　　者：李祥东[1] 汪荣顺[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《哈尔滨工程大学学报》2009年第2期198-203,共6页Journal of Harbin Engineering University

基　　金：中国博士后科学基金资助项目(20070410722)

摘　　要：弹状汽泡形成过程的准确预测对于分析和预防低温推进剂的间歇泉现象具有重要意义.分析了竖直推进剂管内汽泡的碰撞及聚合机理,建立了描述这一过程的MUSIG模型并进行了数值计算.与实验结果对比表明,建立的模型能够有效预测竖直低温推进剂输送管内的汽泡起始聚合高度、弹状汽泡形成高度以及汽泡尺寸分布等重要参数,为间歇泉现象的研究和抑制提供了理论依据.Numerical predictions of the formation of slug bubbles are of great importance in analyzing and preventing geysering. The mechanisms governing bubble collision and coalescence were theoretically analyzed and a MUSIG model was proposed to describe this process. Two -dimensional numerical simulations were then performed using the newly proposed model. Comparison of the numerical results with experimental data confirmed that the model can give accurate predictions of the locations of the onset of bubble coalescence （ OBC）, the formation of slug bubbles （FSB） , as well as local bubble size distributions.

关 键 词：低温推进剂 竖直管路 汽泡聚合 弹状汽泡 MUSIG模型 

分 类 号：TB61[一般工业技术—制冷工程]