These airfoils have been in use for quite a while. Besides America's cup catamarans, there is a number of windsurfing sail designers who invested considerable amount of time in these profiles. Let's take a look at CFD image and see what is going on around these profiles.
This study, just like previous teardrop post, is based on 20 degree angle of incidence and 35 kt air velocity. Colors on wing surface and strings correspond to static air pressure, background colors correspo
These series of blog posts will contribute to understanding how traditional profile works and what gives thick profile superiority. In our CFD (Computational Fluid Dynamics) simulation study we compare two identical outer profiles, with one difference, one is thick and another is thin. Also we explore every 10 degree angle of attack, starting from 50 to 10 were apparent wind remain constant at 35 Kt. Before begin discussion, I would like to address previous designs of wing s