^ dr) ~ \dr J' r^Ri (20A) For the present investigation it was assumed that the slip velocity is equal to the average velocity in the wick. Substituting equations (19A) and (21A) into equations (13A) and (14A) we can obtain the velocity profiles in the wick and the annulus. Fig. 7 shows the velocity profile of the liquid flow in the annulus between-wick and wall as a function of axial pressure gradient.
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