Can anyone kindly guide me on calculation of free volume in twin screw extruder: theoretical (preferred) or practical method of calculation?

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S. Arun

Measure the volume of the cylinder of twin screw extruder initially (given in the specification). Then measure the volume as per the screw dimension (given in the specification of twin screw). Then take the difference

Gaurav Kulkarni

Thank you S. Arun. Ok now if I have this volume, i am just thinking how to decide my screw is filled or starving at any specific througput and screw rotation speed probably.

you can initially give the feed rate as a input and the get the volume (unit is m3/s). screw rotation speed is constant through out the test (in experimental)