# On numerical calculation of Lift Force via Potential Flow

1. Nov 8, 2005

### Clausius2

Imagine:
I want to compute numerically a POTENTIAL STEADY and INCOMPRESSIBLE flow over an airfoil. The set up of the problem is:
$$\nabla^2\phi=0$$
$$\nabla\phi \cdot \overline{n}\big)_{x=surface}=0$$ no normal velocity component on the airfoil surface.
$$\nabla \phi=\overline{U_\infty}$$ as $$x\rightarrow\infty$$ external flow at large distances.
The three main questions which arise are the next:
i) Is it possible to obtain an steady solution of this stuff?
ii) Am I going to obtain any Lift force?. Why?
Thanx for participating in this discussion.