涡流空化水处理的流场仿真分析

依据涡流水力空化原理,构建了污水处理装置模型,利用ANSYS CFX软件进行了计算机仿真,对装置的结构参数以及影响装置内流体压力分布的因素进行了分析,并对仿真结果进行了实验和放大模型仿真验证,进而提出了保证最高降解效率的涡流水力空化污水处理装置的设计原则:选择合适的涡流仓窄缝宽度;除在装置底部要设计挡板外,在涡流仓的顶部增开小孔;在系统允许压力范围内,应选择输出压力高的水泵.

Simulation and analysis of flow fields based on swirling hydrodynamic cavitation degradation

A wastewater treatment device model was established based on the principles of the swirling hydrodynamic cavitation.Various structural parameters of the device and the factors affecting the distribution of the fluid pressure in the device were analyzed by means of the simulation software ANSYS CFX.The Simulated results were validated by experiments and verified by simulation of enlarged models.In order to obtain the highest degradation efficiency,the design principles for the wastewater treatment device based on the swirling hydrodynamic cavitation degradation were put forward: the selection of suitable width of the slits of the swirling chamber,the arrangement of orifices on the top of the swirling chamber in addition to the set-up of baffle plates at the bottom of the device,and the use of water pumps with high output pressure under the allowable pressure scope of the device.