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CFD Study of Traditional and Wing Sails.

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 sail that have been built by sailmakers and enthusiasts. The only designs that I've seen in the past are teardrop profile and fully symmetrical profile with flap, similar to AC cats.

#1 Teardrop profile.