CFD Simulation and PIV Measurement of Flow Fields in Stirred Vessel with Double-flat Agitator

The CFD technique and PIV were adopted to investigate the flow field and concentration distribution in Stirred Vessel with double-flat agitator.Based on the Navier-Stokes equations and standard turbulence model,turbulent flow fields were solved,and the flow pattern and mixed concentration were analyzed under the different speeds and different heights of agitator.Results show that different positions of double-flat agitator did not change the flow pattern of flow fields,and double loop flow were formed as the center of agitation;the basic power was not affected by the location of the agitator,but concentration on different monitoring spot and mixing time was obviously affected;feeding position on location of agitator can take full advantage of fluid turbulence characteristics to accelerate the mixing speed,shorten the mixing time,save costs and increase economic efficiency.