Ansys Learning Forum › Forums › Discuss Simulation › Fluids › non-physical negative uds concentrations with small diffusion coefficient › Reply To: non-physical negative uds concentrations with small diffusion coefficient
July 17, 2024 at 12:42 pm
Rob
Forum Moderator
Not sure. How well resolved is the mesh in the regions the scalar calc is struggling? The image looks to be 3-4 cells across a gap but that could be an optical illusion.Â