Numerical modelling of a non-Newtonian fluid in the twin-screw pump

Twin screw pump is a positive displacement pump, which widely used in numerous type of foodstuff applications. Numerical CFD analysis presented this paper focuses on the investigation influence clearances and non-Newtonian behaviour fluid. The operates at low rotational speed inlet pressure. As first step 3D simulation twin-screw non-rotating segment has been carried out using static mesh without rotation. Various empirical equations have applied to represent viscosity relations for fluid simple shear. results are compared two different values various approaches description. obtained showed effect both tested parameters. physical experiment under preparation validate calculation results.