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Old   April 2, 2014, 23:44
Default Adding a force at a specific point.
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Hello,

I am an engineering student and am new to SU2 and CFD in general. I am trying to add a surface force on an airfoil to simulate the suction of a plasma actuator. I want to be able to alter the velocity field at a specific point on the surface of the airfoil.

In order to do so, what files would I need to change? Is there a specific source file that would let me do something like this? I am lost.

Thank you for your help!
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Old   April 3, 2014, 20:08
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Francisco Palacios
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Quote:
Originally Posted by cgusty01 View Post
Hello,

I am an engineering student and am new to SU2 and CFD in general. I am trying to add a surface force on an airfoil to simulate the suction of a plasma actuator. I want to be able to alter the velocity field at a specific point on the surface of the airfoil.

In order to do so, what files would I need to change? Is there a specific source file that would let me do something like this? I am lost.

Thank you for your help!
Thanks for using SU2,

Are you running Euler or Navier-Stokes?

Best,
Francisco
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Old   April 3, 2014, 20:22
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Francisco,

I am using Euler.

Thank you,
Chris
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Old   April 13, 2014, 15:04
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Francisco Palacios
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Quote:
Originally Posted by cgusty01 View Post
Francisco,

I am using Euler.

Thank you,
Chris

Thanks Chris,

As you know, the boundary condition for Euler problems is a slip boundary condition, so in practice it is not possible to modify the velocity (normal to the surface). In that case my recommendation is to use the inlet boundary condition

%
% Inlet boundary marker(s) with the following formats (NONE = no marker)
% Total Conditions: (inlet marker, total temp, total pressure, flow_direction_x,
% flow_direction_y, flow_direction_z, ... ) where flow_direction is
% a unit vector.
% Mass Flow: (inlet marker, density, velocity magnitude, flow_direction_x,
% flow_direction_y, flow_direction_z, ... ) where flow_direction is
% a unit vector.
MARKER_INLET= ( NONE )

Another possibility is to use a Navier-Stokes solution, in that situation you can specify a velocity on the solid surface different from 0.

Best Regards,
Francisco
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