Dynamics of a Body with a Sharp Edge in a Viscous Fluid
2018, Vol. 14, no. 4, pp. 473-494
Author(s): Mamaev I. S., Tenenev V. A., Vetchanin E. V.

This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License
Author(s): Mamaev I. S., Tenenev V. A., Vetchanin E. V.
This paper addresses the problem of plane-parallel motion of the Zhukovskii foil in a viscous
fluid. Various motion regimes of the foil are simulated on the basis of a joint numerical solution
of the equations of body motion and the Navier – Stokes equations. According to the results
of simulation of longitudinal, transverse and rotational motions, the average drag coefficients
and added masses are calculated. The values of added masses agree with the results published
previously and obtained within the framework of the model of an ideal fluid. It is shown that
between the value of circulation determined from numerical experiments, and that determined
according to the model of and ideal fluid, there is a correlation with the coefficient $\mathcal{R} = 0.722$.
Approximations for the lift force and the moment of the lift force are constructed depending
on the translational and angular velocity of motion of the foil. The equations of motion of
the Zhukovskii foil in a viscous fluid are written taking into account the found approximations and the drag coefficients. The calculation results based on the proposed mathematical model
are in qualitative agreement with the results of joint numerical solution of the equations of body
motion and the Navier – Stokes equations.
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