Reply To: Error Post-Processing Solution Data to Calculate Pressure and Viscous Forces

[Rob]

Viscous will be a drag effect, so if you're not resolving the flow boundary layer you'll not get the right answer. Mesh dependency studies are there for a reason, but also aren't just for refining the whole domain. Run another level of refinement and see how that ties up. You may need a couple more cycles until the value stops changing.