摘要
在考虑气-液两相间质量源项和能量源项的条件下,基于VOF算法,建立了水和空气沿竖直平板壁面两相降膜流动传热传质的CFD模型。利用该模型研究了水和空气两相间的传质特性,分析了液膜波动、进气进液速度以及温度对传质的影响,计算结果表明:一定程度的液膜波动、进气速度和进液速度的提高、气-液之间的温差的增加,都能强化气-液之间的传质过程。
By considering the mass-transfer source term and the heat-transfer source term in gas-liquid two-phase flow, a computational model based on the Volume of fluid（VOF） algorithm was established to describe the mass transfer of two-phase （air-water） falling film on a vertical plate. The model was used to analyze the influence of fluctuation, inner liquid velocity and inner gas velocity, inner liquid temperature on the mass transfer in water-air two phase flow. The results indicated that the film fluctuation, higher inner water and air velocity, higher inner water temperature can enhance the mass transfer in water-air falling film on a vertical plate.
出处
《燃气轮机技术》
2012年第3期34-39,共6页
Gas Turbine Technology
基金
国家重点基础研究发展规划基金项目(973计划)(2007CB210102)
关键词
降膜
传质
气-液两相流
数值模拟
falling film
mass transfer
gas-liquid two-phase flow
numerical simulation
