差热式人工上升流的数值模拟

The Numerical Simulations of Differential Heating Liquid Upwelling

本文通过数值模拟方法研究了一种新的人工上升流技术——差热式人工上升流,通过对差热式人工上升流的理论分析,利用经典计算流体力学软件FlUENT建立合理的数值模型,模拟分析上升流的流场,并探讨不同工况下差热式人工上升流流场的变化规律,得到不同的加热功率与上升流上升速度、有效横截面积以及流量等特性参数之间的关系.增大加热功率能够提高上升流上升速度,增加有效横截面积和流量,有利于上升流的产生,不过随着加热功率的加大有利的效果会减弱.

With numerical analysis,this paper studied a new artificial upwelling technology-differentialheating-liquid-upwelling(DHLU).The numerical model of DHLU was built on the theoretical analysis.And the characteristics of upwelling flow field were analyzed by the CFD software-ANSYS FLUENT.Results showed that the flow rate of upwelling,the cross-section area and the rising velocity all increased as the heating power increased.But as the heating power increased,the effect of improving upwelling weakened gradually.