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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Transonic Drag Under Predicted significantly › Reply To: Transonic Drag Under Predicted significantly

April 12, 2024 at 1:22 pm
TJ Abraham
Subscriber

Mesh quality all check out.  Attached is a zoomed out picture of the mesh.  This is has 7 million cells with y+ around 200.  As described above reference values are as follows:

Area: planform area of aircraft, Density: fluent calculated via pressure farfield BC, Enthalpy: pressure farfield, Length: from aircraft geometry, Pressure: this is static pressure from the pressure farfield calculated from atmosphere tables, Temperature: pressure farfield, Velocity: pressure farfeild, Ratio of Specific heat: default, yplus for heat transfer: default.

Any thoughts on that reference values or the mesh? I realize the mesh isn't perfect but it should be good enough to at least be within an order of magnitude right?  Regarding the NACA airfoil help where is that located? 

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