One nonlinear variational problem of the theory of cavitating profiles
Dmitri Vladimirovich Maklakov, Ilgiz Rifatovich Kayumov · Russian Mathematics · 2012
In this paper we study the limiting values of the lift and drag coefficients of profiles in the Helmholtz-Kirchhoff (infinite cavity) flow. The coefficients are based on the wetted arc length of profile surfaces. Namely, for a given value of the lift coefficient we find minimum and maximum values of the drag coefficient. Thereby we determine maximum and minimum values of the lift-to-drag ratios.