Research on Novel Magnetorheological Fluids Preparation Device Based on Flow Field Analysis

摘要

To solve the problem of insufficient stirring in preparation of magnetorheological fluids, the stirring device is optimized bymodeling, simulation and experiments. The ordinary agitator is investigated by multiple reference-frame method and Euler–Mixture model, showing that it is of poor stirring effects. On this basis, several monitoring points and lines are selected tomonitor the velocity of the agitator in axial, radial and tangential directions. Meanwhile, the varying concentration of solidwith time is also monitored to research the influence of blade number, baffle number and stirring speed on stirring performance.The experiments are carried out to evaluate stirring effects of optimized agitator through the sedimentation rate ofmagnetorheological fluids. The results show that the design of agitator with two-layer blades, six baffles and stirring speedof 20 r/s can significantly reduce the mixing time, about 83%.