Journal of the Society of Motion Picture and Television Engineers (1950-1954)

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4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 X 2.8 E 2.6 2.4 2.2 2.0 4.52xl05=.ffe08/Z/ 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 3.63xl05=fle°8/£> __ I I 3.46xl05=/?e°8/Z) Fig. 15. Plot of time factor (turbulent developing time compared to "constant agitation" developing time) as a function of gamma. factor Re**/D. It can be seen that a variation in the Re°*/D factor between 2 and 9^ produces a variation in the time factor of turbulent agitation over no agitation varying from 2.3 to 4.5. Similarly, it is apparent that the time factor of turbulent developing over constant agitation developing varies between 1.1 and 2.0 for a gamma of 1.0 and between 1.25 and 2.2 for a gamma of 1.3. Attempts to plot the data obtained as a function of Reynolds number alone resulted in a wide spread in the data. This verified the theory which indicated that the Reynolds number is not the critical variable in the rate of development but that the figure Re°-*/D is the important factor. (A theoretical derivation of the reasons for the use of this factor has been given previously.) When the Re°*/D factor is used as the abscissa on points obtained with different channels, they fall into a relatively smooth curve. It is interesting to note that a variation Katz and Esthimer: Turbulent Fluid Processing 123