Abstract

In order to check the validity of the mathematical model for analyzing the flow field in the air-agitated seed precipitation tank, a scaled down experimental apparatus was designed and the colored tracer and KCl tracer were added in the apparatus to follow the real flow line. Virtue tracers were considered in the mathematical model and the algorithm of tracers was built. The comparison of the results between the experiment and numerical calculation shows that the time of the tracer flows out of stirring tube are 40 s in the experiment and 42 s in numerical calculated result. The transient diffusion process and the solution residence time of the numerical calculation are in good agreement with the experimental results, which indicates that the mathematical model is reliable and can be used to predict the flow field of the air-agitated seed precipitation tank.

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