Error when converging when Mesh is slightly changes -- CFD Online Discussion Forums

May 15, 2024, 18:38	Error when converging when Mesh is slightly changes	#1
Leo Laurer New Member Join Date: May 2024 Posts: 1 Rep Power: 0	I am simulating a laminar flow at Re=1e6 with free stream velocity ~0.1, water kinematic viscosity 0.984e-6 and length of wall 10m. This is the simulated flow: I have a very simple Mesh at the moment as shown here: And if I increase any of the Mesh values by any amount the simulation no longer converges and I have no idea why this occurs. This is my controlDict: I have a U=[0.984 0 0] boundary condition at the inlet and a pressure =0 at outlet. If anyone has any idea why it might not be converging any advice would be useful!

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