循环推流式固定化微生物反应器内部流场数值模拟与结构优化

Numerical Simulation of Inner Flow Field and Structural Optimization of Circulating Push-flow Microbial Reactor

设计一种循环推流式固定化微生物反应器,并利用Fluent软件对不同结构的反应器内部流场进行了数值模拟,得到反应器内流场多相流的速度分布云图和速度矢量图,揭示了不同结构反应器内流体的流动状态。通过对数值模拟的结果进行分析,得出曝气头安装高度为580mm时,反应器内流体流动更流畅,气提效果更好。通过对循环推流式固定化微生物反应器进行实验验证,证实仿真结果与实验结果吻合。

A circulating push-flow microbial reactor was designed and having Fluent used to simulate reactor＇ s different structures was implemented to get both velocity contour and vector diagram of gas-liquid flow in the reactor＇ s flow fields which reflects the status of fluid flows in the reactor with different structures. Analyzing the results of simulation indicates that when the height of aerator installation equals to 580mm, the fluid within the reactor flows more smoothly and the gas stripping effect becomes better. Testing this microbial reactor dem- onstrates that the simulation results coincide with the test results.