[gionata]

Hi,

I have to study the landing of an aeroplane.
In particular i realized a model where the airfoil (NACA2412) is placed in a flow tunnel with a velocity inlet and a pressure outlet.
I have two questions:
1.
How can I model the fact that the ground is static with reference to air? It is correct use a moving wall with velocity equal to air flow? (consider that this is a transient simulation).
2.
The simulation is transient because i want to simulate the aeroplane's slowdown and so i change the freestream velocity every time step. What is the better method to import the time velocity profile from a txt file that i create previosly?

Thanks a lot

[gionata]

Can anyone help me?