Problem of the residual

MFiX
#1

Hi everyone, I have met one problem. The residual does not converge as shown in the figure.I hope you can help me, thank you!

47ea68aece7e07fb266c42dc451e8dc
47ea68aece7e07fb266c42dc451e8dc860×974 11.7 KB

single.mfx (15.8 KB)