初始冷凝液滴尺寸分布的分子团聚模型  

Molecular clustering analysis on initial droplet size distribution

作　　者：宋天一[1] 兰忠[1] 马学虎[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：《化工学报》2010年第4期839-843,共5页CIESC Journal

基　　金：国家自然科学基金项目(50776012;50906006);教育部新世纪优秀人才基金项目(NCET-05-0280)~~

摘　　要：Initial dropwise condensation of moist air on a hydrophobic self-assembled monolayer(SAM)surface was investigated with a high speed camera and a microscope.The transient initial droplet size distribution and the growth of micro-droplets by direct condensation on the surface without coalescence were analyzed from the concept of molecular clustering.Based on the general characteristics of nucleation of dropwise condensation,a molecular clustering physical model was proposed to describe the state of steam molecules in the bulk steam phase before condensing on the cooled surface.Initial dropwise condensation of moist air on a hydrophobic self-assembled monolayer（SAM）surface was investigated with a high speed camera and a microscope.The transient initial droplet size distribution and the growth of micro-droplets by direct condensation on the surface without coalescence were analyzed from the concept of molecular clustering.Based on the general characteristics of nucleation of dropwise condensation,a molecular clustering physical model was proposed to describe the state of steam molecules in the bulk steam phase before condensing on the cooled surface.

关 键 词：初始滴状冷凝 尺寸分布 分子团聚 

分 类 号：TK124[动力工程及工程热物理—工程热物理]