水气界面气体扩散速率模型研究进展

Progress of Air-water Gas Transfer Rate Models

估算水气界面气体扩散速率模型主要有薄层模型、表层更新模型、表层散度模型和经验模型.研究表明,未来应当更多地研究薄层模型的气-薄层内的气体扩散;结合水面水体的小涡流和大涡流的表层更新模型是未来的发展方向,表层更新和表层散度理论结合的气体扩散速率模型应当进行实用验证;在应用基于风速的气体扩散速率的经验公式时应当选用风速在实验风速范围内、相似水环境的经验模型,适用于更复杂水环境条件的气体扩散速率模型是未来的研究方向.

Film model, surface renewal model, surface divergence model and the empirical models are included in estimating the air-water gas transfer rate. In conclusions, the phenomenon of air transfer through the air-film of film model requires further research; the surface renewal models of small eddies combined with large eddies is in the direction of the development; the gas transfer rate of the surface renewal combined with surface divergence theory requires practical verifications. In applicating empirical models, the models in similar wind speed ranges and water environments related to wind speed are optimal selection. The gas transfer rate models suited for more complex water environments are the development direction of our future research.