André

Hi everyone, v6.62 is the last version of xflr5. There won't be any code updates or new releases from now on. Please consider upgrading to flow5. All xflr5 features except for inverse foil design have been ported to the new application. André

Sometimes the gray interface can be a symptom of an OpenGL issue. But that shouldn't be the case on Mac ARM which support OGL 4.1. If xflr5 can switch to the foil design and plane design views, everything's fine. André

Strange behavior for symmetrical setup

Hi everyone, v6.62 is intended to be the last version of xflr5, barring any new major bug which would need fixing. Please consider upgrading to flow5. All xflr5 features except for inverse foil design have been ported to the new application. André

It is a numerical effect.

The plane must be constructed so that the trailing vortices or wake panels shed by the upstream wing do not interfere with the downstream panels. André

Hello, I'm a bit surprised because so far xflr5 had compiled and run on all OS with Qt6 without a hitch. What was the error and how did you fix it? André

The interpolation of the viscous drag using the local apparent angle is less reliable than the interpolation based on the lift coefficient. The latter method is marked "recommended" and should be preferred. Also please keep in mind that there is no such thing as "ground truth" in xflr5 and flow5 given all the approximations made in the potential flow model and in the evaluation of the viscous drag using 2d data. In the future, please post all flow5 related questions on the flow5 project page. An...