Learning Forum

[akin3rd]

I would like to simulate the suction on an airfoil using fluent 

the airfoil diagram is shown below, there is a suction slot which the sucked air flows through that leads to the low-pressure cavity which causes the suction.

The idea is to induce high energy turbulent mixing in the boundary layer flow and delay/prevent flow separation, thereby preventing stall

How do I simulate this environment in ANSYS Fluent.

Thanks

[Keyur Kanade]

please check this

though its old, it will help you get through process. 

https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+Flow+over+an+Airfoil-+Problem+Specification

 

[akin3rd]

Hello,

I don't see any tutorials on how to create suction.

I just need to know how to create a low-pressure environment in the suction cavity i.e. how do I specify boundary conditions that create a low-pressure environment?

Thanks

[Harak]

Did you found an answer to this question? I have the same problem. 

[peteroznewman]

I'm not a CFD expert, but I would assign the vertical edge inside the low pressure cavity to be a Pressure Outlet. Assign a negative gauge pressure to that outlet.  That creates the suction.

There would be a large air domain around the airfoil with an inlet velocity boundary condition on the left side, and a pressure outlet boundary condition on the right side that would have a zero gauge pressure.

[akin3rd]

I changed the geometry entirely, what I did was to make a section of the airfoil wall a velocity inlet BC or a pressure outlet BC 

[zafi41]

hello man..I am trying to do this same problem. But split the edge of the upper surface of NACA 0018 and define pressure outlet BC. But if I create slot at 60% length of the chord, mesh on the face adjacent to the slot becomes unstructured. Can you please give me some solution.. I need to complete this urgently.