全钒液流电池管道内流场模拟分析

Numerical simulation of vanadium redox flow battery flow field

全钒液流电池凭借其性能优点在各方面都得到了大量应用,但其在应用过程中的流场特性对其性能存在很大影响。因此提出用Fluent 6.3.26对全钒液流电池管道内流场进行分析,讨论了不同支管管径对支管电解液流量分配的影响,比较了主管入口速度、支管出口速度的理论值和模拟值的差异。结果表明,支管管径对支管电解液流量分配有着明显的影响,速度理论值和模拟值的差异较小,提出模拟方法适合用于全钒液流电池管道内流场的模拟分析。

Vanadium redox flow battery（VRB） has been widely applied in various fields attributed to its excellent properties,however,its electrical performance is greatly influenced by its fluid behavior.Therefore,the flow field of VRB was investigated based on Fluent 6.3.26.The influence of branch tube diameter on electrolyte distribution was specifically discussed,and the deviation between theoretical velocity and simulated velocity was comparatively analyzed.The results show that the branch tube diameter impacts the electrolyte distribution significantly,and the simulated velocity fits quite well with theoretical velocity,indicating that the proposed simulation strategy is suitable for flow field modeling of VRB.