Thank you for your advice.
I plotted the mass imbalance contour and attached the pictures. As reference i attached a picture of the model with viscosity 0.0005 which is converging.
Can you tell if that could be the reason my system is not converging?
Is an imbalance of e-08 to high?





Viscosity: 0.0003 Pa s

Viscosity: 0.0003 Pa s Zoom



Viscosity: 0.0005 Pa s