[asonda]

Hi,

I would like to run a 2D simulation with a curved inlet boundary (an arc).

Can I define uniform velocity (i.e. massflow) as normal to the boundary?

The inlet boundary type seems to require a velocity vector for both its formulations (TOTAL_CONDITIONS, MASS_FLOW).

Is there maybe an alternative boundary condition that would suit such requirement?

Thanks a lot,
Alberto

[fpalacios]

Dear Alberto,

This is a very interesting suggestion and somehow easy to implement. In fact, if you want a quick fix you can use the option MARKER_ENGINE_EXHAUST where the flow is normal to the surface (you should specify total quantities). Otherwise you can modify

void CEulerSolver::BC_Inlet(CGeometry *geometry, CSolver **solver_container,
CNumerics *conv_numerics, CNumerics *visc_numerics, CConfig *config, unsigned short val_marker) { }

in solver_direct_mean.cpp

in particular there is a place where SU2 defines the direction

case MASS_FLOW:

/*--- Retrieve the specified mass flow for the inlet. ---*/

Density = Inlet_Ttotal[val_marker][iVertex];
Vel_Mag = Inlet_Ptotal[val_marker][iVertex];
Flow_Dir = Inlet_FlowDir[val_marker][iVertex];

Instead of

Flow_Dir = Inlet_FlowDir[val_marker][iVertex];

You should write something like

Flow_Dir = Inlet_FlowDir[val_marker][iVertex];

you should point Flow_Dir (remember it is a C++ pointer) to the UnitNormal vector.

I hope this helps. If you are interesting in developing SU2, you should check www.su2devsociety.org

Best,
Francisco