Squeezing flow between parallel disks

Fig. E6.14b Dimensionless plot of squeezing flow data by Leider (50) representing 181 runs for four fluids silicone oil, 1% solution of hydroxyethyl cellulose (HEC), 0.5% solution of Separan (polyacrylamide) in glycerin, and polyisobuthylene solution. [Reprinted by permission from R J. Leider, Squeezing Flow between Parallel Disks, II, Experimental Results, Ind. Eng. Chem. Fundam., 13, 342-346 (1974).]...

P. J. Leider, Squeezing Flow between Parallel Disks II Experimental Results, Ind. Eng. Chem. Fundam., 13, 342-346 (1974). 

The simplest model for film drainage assumes that the conditions affecting the drainage rate are time invariant. By analogy to squeezing flow between parallel disks (lubrication approximation), the rate at which the film thins is given by... 

Example 6.14 Squeezing Flow between Two Parallel Disks This flow characterizes compression molding it is used in certain hydrodynamic lubricating systems and in rheological testing of asphalt, rubber, and other very viscous liquids.14 We solve the flow problem for a Power Law model fluid as suggested by Scott (48) and presented by Leider and Bird (49). We assume a quasi-steady-state slow flow15 and invoke the lubrication approximation. We use a cylindrical coordinate system placed at the center and midway between the plates as shown in Fig. E6.14a. 

FIGURE 3.36 Lubricated squeezing flow between two parallel disks. The figure at the left shows the initial configuration while the figure at the right shows the material at some other time t > to-(Reprinted by permission of the publisher from Soskey and Winter, 1985.)... 

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See also in sourсe #XX -- [ , , ]

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