真空水平单管降膜蒸发数值模拟研究  

Numerical Simulation Research of Film Thickness and Flow Field of Single-pipe Falling Film Evaporation under Vacuum

作　　者：邢磊[1] 周亚素[1] 彭泰铭 

机构地区：[1]东华大学环境科学与工程学院

出　　处：《建筑热能通风空调》2016年第11期21-24,12,共5页Building Energy & Environment

摘　　要：降膜蒸发技术具有换热效率高、传热温差小、液体充注量小等优点,广泛应用于海水淡化、食品加工、石油化工等领域。本文采用数值模拟的方法对真空条件下的水平单管降膜蒸发传热传质问题进行了研究,重点研究了液膜厚度以及液膜内速度场的情况。The falling film evaporation technology is widely used in desalination, food processing, petrochemical, and other fields because of its high heat transfer efficiency, small temperature difference, small amount of liquid injection, etc. The film thickness and flow field were studied by numerical simulation and the study was focus on liquid film thickness and the velocity field.

关 键 词：降膜蒸发 膜厚 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]