[Al_Psi]

Hi.
I am trying to get acoustics signature of a quadcopter.
Can someone please guide me how to setup the model for a hovering platform. What should be the inlet and exit conditions, with no x and y velocity?
i am using Moving mesh for fluid domain against each rotor, do I need to employ moving wall for the blades inside the domain as well.
i was getting reverse flow at exit for pressure outlet, tried to replace it with outflow but the problem still persists?
Any suggestions please?
Regards

[erkampasha]

Originally Posted by Al_Psi

Hi.
I am trying to get acoustics signature of a quadcopter.
Can someone please guide me how to setup the model for a hovering platform. What should be the inlet and exit conditions, with no x and y velocity?
i am using Moving mesh for fluid domain against each rotor, do I need to employ moving wall for the blades inside the domain as well.
i was getting reverse flow at exit for pressure outlet, tried to replace it with outflow but the problem still persists?
Any suggestions please?
Regards

You do not need to give motion to blades. Do overset mesh which includes blades and give the motion to zone you ve created with overset. You can create circle domain which has 1 boundary. And apply pressure inlet boundary condition which has value of 0 pa under the atmosphere pressure. And you should create your domain bigger than you have create to get rid of reverse flow.