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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Negative Drag Coefficient on NACA 0021 aerofoil › Reply To: Negative Drag Coefficient on NACA 0021 aerofoil

June 16, 2023 at 11:59 am
Rob
Forum Moderator

If you enter NACA into the search box at the top I suspect you'll find the answers. You've almost certainly not defined the reference area correctly.Â