Hello H_E,nI have not used the Eulerian Granular Multiphase Model, but I understand that the packing limit is a limitation of the volume fraction of the granular phase based on the validity of the model.nI imagine that the contour of volume fraction in the case of 0.6 (inlet) will be similar than the one of 0.5 (inlet). If this is the case, I do not understand the contour of molecular viscosity. Assuming constant powder viscosity, which is the expression for the viscosity of the polymer? Have you checked if it is correct?n