The problem got solved by reducing the timestep sizes further.
In my numerical formulation, the problem disappears when timestep sizes is kept below 1.0E-05
Code: Select all
Timestep Sizes (1) =1.0e-5 ! keeping it equal to or less than 1.0E-05
Code: Select all
Timestep Sizes (1) =1.0e-5 ! keeping it equal to or less than 1.0E-05