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Ansys Learning Forum Forums Discuss Simulation Fluids Convergence – Fluctuations. Reply To: Convergence – Fluctuations.

Rob
Forum Moderator

There are lots of reasons, so start by checking the cell and mesh quality, the latter included whether you're resolving the flow & temperature gradients sufficiently. From there look at the flow field, what is going on and why might there be an instability in the result?