[Flyinglosi]

Hallo guys,

today I had a discussion with a colleague of mine about the principles of calculation force and torque on a solid structure with cfd and the following question appeared:

Let's assume we are estimating the air-flow about a solid structures (like for example a wing) with a 2d-simulation-model. Now we want to calculate force and torque acting on the structure. As I understood from the discussion, programs like openFoam are integrating the pressure on the outer surface of the structure.

Would it be also possible to define a control-volume (containing the structure) and use linear and angular-momentum of the air-flow to calculate force and torque? If yes, does it make any difference and what are the benefits of each method?

Thanks for your answers

Greetings from Austria

Stephan