Calculate the shear rate in a 60 mm two-lobe twin screw extruder with a D o/Di ratio of 1:54 in two adjoining kneading blocks with thin disks and wide disks. The clearance between the top of the disks and the barrel wall is 0.75 mm, and the bottom of the disks is 8.2 mm from the barrel wall. What is the range of shear rates in the wide and narrow kneading blocks?
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