Experimental determination of micro-mixing

In experiments [141, 566] in three baffled stirred tanks with turbine stirrers (V = 1 20 100 1), the position of the feed point for the add and the stirrer power were varied. The micro-mixing was determined according to the ViUermaux s method. The results in Fig. 1.26 show a fairly weak dependence of the degree of micromixing a upon thepower per unit mass e  

The position of the feed point apparently has no significant influence. 

The results in the 1001 vessel in part were lower than in the two smaller vessels. 

A number of papers [16, 42, 462] refer to the fact that at P/pV = constant a de- 

It was also established that the presence of solid particles (20 dp [pm] 1300 and p wt.-5%) had a negligible effect upon the micro-mixing [169]. In [19] it was found that the selectivity was only influenced at high mass fractions p of particles and only in case of smaller and heavier particles. This indicated that it was only under these conditions that the turbulence was significantly affected in stirred systems. 

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