气力人工上升流对水体温度的影响研究

Influence of air-lift artificial upwelling on water temperature

为解决气力人工上升流技术对周围水体温度和营养盐等分布的影响问题,将计算流体仿真技术应用到温度场的仿真中,开展了计算分析,建立了上升流过程与温度变化之间的关系,提出了利用VOF多相流模型对温度场进行仿真,研究了气力人工上升流对水体温度的影响。在仿真结果的基础上,对气力人工上升流的效果进行了评价,并进行了千岛湖试验。实验结果表明,试验结果和仿真结果基本吻合,该模型能够很好地指导以后的海试,为气力人工上升流系统的设计奠定了基础。

In order to solve the problems of the influence of air-lift artificial upwelling on the surrounding water temperature and nutrientetc, computational fluid simulation was applied to the simulation of temperature. After the analysis of calculation, the relationship be-tween upwelling process and the temperature change was established. A method was presented to use the VOF multiphase flow model to simulate the temperature, researching on air-liftartificial upwelling effects on water temperature. The effect of the air-lift artificial upwelling was evaluated on the basis of the results of simulation, the qiandao lake test was done. The experimental results show that, the simulation is basically accordant with the results of experiment. At the same time, this model can be a good guidance for the next sea trial and also builds up the base of the design of air-lift artificial upwelling system.