oscillating airfoil in an inviscid fluid flow
How can we apply pressure boundary condition on airfoil surface oscillating in an inviscid fluid flow?

Re: oscillating airfoil in an inviscid fluid flow
Why do you need a pressure boundary condition, not the standard vanishing normal velocity on the airfoil?

Re: oscillating airfoil in an inviscid fluid flow
I want to solve unsteady Euler equations using Ctype mesh. that's why I need pressure boundary condition on the airfoil surface.

Re: oscillating airfoil in an inviscid fluid flow
the pressure BC can be obtained from the expression(latex math): {\partial p \over \partial n}=\rho \vec{a}_b \cdot \vec{n} where \vec{a}_b is the acceleration of the body and \vec{n} is a vector normal to the surface.

Re: oscillating airfoil in an inviscid fluid flow
the equation you mentioned must be applied in the fluid and we know that fluid particles slip on the airfoil surface and for slip condition we know that acceleration of body is not equal to fluid particles !

Re: oscillating airfoil in an inviscid fluid flow

Re: oscillating airfoil in an inviscid fluid flow
You apply this to get the pressure and then a condition on the normal velocity(ie that they are the same for the fluid and structure). Look at any papers which deal with fluidstructure interaction and the Euler equations.

All times are GMT 4. The time now is 07:18. 