i am testing foils that are crescent-shaped (like fish caudal fins). they are upper/lower side symmetrical, but the form (extended wing tips) induces a lot of vortices. i am finding it quite difficult to find theories of fluid dynamics for these kind of effects. thanks for the help.
hi. this may seem a stupid question, but i have gone through a couple of books now (dubs, hoerner, schlichting, crowe)and i still don't quite get it. according to the basic formula, induced drag coefficient of a wing is proportional to lift coefficient squared:
C(draginduced) = C(lift)^2 /...