CFD模拟用于电催化反应器电极结构及进水方式的优化

In order to optimize the electrode configuration and influent mode inside the electro-catalytic ractor, computational fluid dynamics (CFD) was used to simulate the velocity distribution and the simulation result was validated by limiting current method. The results showed that tangential influent mode had excellent mass transfer capability, its limiting current was 1.34 times and 1.21 times of that in lateral and bottom influent modes under static conditions, respectively. When the inlet velocity increased to 0.062 m·s⁻¹, the limiting current of tangential influent mode was 1.49 times of the static state, and the corresponding mass transfer enhancement factor (γ) was 1.475, being higher than that of bottom (1.428) and lateral (1.317) influent mode, which illustrated that the limiting current and mass transfer capability can be enhanced by increasing inlet velocity effectively. The result demonstrated mesh electrode and tangential influent mode favored the uniform velocity distribution on electrode surface and in the electro-catalytic reactor so as to promote the uniformity of solution distribution and space utilization in electro-catalytic reaction. In addition, increasing inlet velocity could effectively enhance the limiting current and mass transfer performance of electro-catalytic reactor. The above result would provide certain reference for the design of electrochemical reactors.