基于FLUENT软件的管式搅拌反应器流场的数值模拟

Numerical Simulation of Flow Field in a Stirred Tubular Reactor with FLUENT Software

运用商业计算流体力学(CFD)软件FLUENT对一种新型管式搅拌反应器进行流场模拟,用GAMBIT建立流场实体模型,采用标准κ-ε湍流模型以及多重参考系法(MRF)处理搅拌桨区.结果表明,计算所选模型能较准确地预测搅拌反应器的速度场、压力场及湍流动能分布,考察流量为1 m^3/h时不同搅拌转速对反应器内部混合的影响,此时对应的最佳搅拌转速为50 rpm左右.模拟结果将为实验研究提供适当的操作参数,对搅拌反应器的优化和放大具有一定参考价值.

The commercial software package FLUENT 6.3 was used with multiple reference frames(MRF)impeller rotation model and the standardκ-εturbulence model to simulate the flow field in stirred tubular reactor.The result showed that FLUENT could simulate detailed information on distribution of velocity,pressure and turbulence kinetic energy.Different impeller rotating speeds were investigated at inlet flow rate of 1 m^3/h.The optimum stirring speed was somewhere near 50 r/min.The information would be very useful in ...