[jomunkas]

Hi,

I am wondering if anybody tried to use the shroud marker as boundary condition.
Can anybody explain me how to use it? What is the difference compared to Euler?

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|   / __| | | |_  )   Release 7.0.3 "Blackbird"                         |
|   \__ \ |_| |/ /                                                      |
|   |___/\___//___|   Suite (Computational Fluid Dynamics Code)         |
|                                                                       |
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| SU2 Project Website: https://su2code.github.io                        |
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-------------------- Output Information ( Zone 0 ) ----------------------
 Writing solution files every 1000 iterations.
Writing the convergence history file every 1 inner iterations.
Writing the screen convergence history every 1 inner iterations.
The tabular file format is Tecplot (.dat).
Convergence history file name: history.
Forces breakdown file name: forces_breakdown.dat.
Surface file name: surface_flow.
Volume file name: flow.
Restart file name: restart_flow.dat.

------------- Config File Boundary Information ( Zone 0 ) ---------------
+-----------------------------------------------------------------------+
|                        Marker Type|                        Marker Name|
+-----------------------------------------------------------------------+
|                         Euler wall|                         DUMMY_DOWN|
|                                   |                           DUMMY_UP|
+-----------------------------------------------------------------------+
|                          Far-field|                                 FF|
|                                   |                                 IN|
+-----------------------------------------------------------------------+
|                  Periodic boundary|                              SIDE-|
|                                   |                              SIDE+|
+-----------------------------------------------------------------------+
|                    Outlet boundary|                                OUT|
+-----------------------------------------------------------------------+
|                     Heat flux wall|                              BLADE|
|                                   |                                TIP|
|                                   |                                HUB|
+-----------------------------------------------------------------------+

-------------------- Output Preprocessing ( Zone 0 ) --------------------
Screen output fields: INNER_ITER, RMS_DENSITY, RMS_MOMENTUM-X, RMS_MOMENTUM-Y, RMS_ENERGY
History output group(s): ITER, RMS_RES
Convergence field(s): REL_RMS_DENSITY
Ignoring Time Convergence Field(s): TAVG_DRAG 
Warning: No (valid) fields chosen for time convergence monitoring. Time convergence monitoring inactive.
Volume output fields: COORDINATES, SOLUTION, PRIMITIVE

------------------- Geometry Preprocessing ( Zone 0 ) -------------------
Three dimensional problem.
1017064 grid points.
2432720 volume elements.
11 surface markers.
27860 boundary elements in index 0 (Marker = BLADE).
67158 boundary elements in index 1 (Marker = DUCT).


Error in "short unsigned int CConfig::GetMarker_CfgFile_TagBound(std::__cxx11::string)": 
-------------------------------------------------------------------------
The configuration file doesn't have any definition for marker DUCT

% -------------------- BOUNDARY CONDITION DEFINITION --------------------------%
%
% Navier-Stokes (no-slip), constant heat flux wall  marker(s) (NONE = no marker)
% Format: ( marker name, constant heat flux (J/m^2), ... )
MARKER_HEATFLUX= ( BLADE, 0, TIP, 0, HUB, 0 )
%
% Euler wall boundary marker(s) (NONE = no marker)
MARKER_EULER= ( DUMMY_DOWN, DUMMY_UP)
%
MARKER_SHROUD= (DUCT)
% Far-field boundary marker(s) (NONE = no marker)
MARKER_FAR= ( FF, IN)
% INLET_TYPE= TOTAL_CONDITIONS
% MARKER_INLET = (IN,  288.15 , 101325.0, 1.0, 0.0, 0.0)
%
% Outlet boundary marker(s) (NONE = no marker)
% Format: ( outlet marker, back pressure (static), ... )
MARKER_OUTLET= ( OUT, 101325.0 )
%
% Periodic boundary marker(s) (NONE = no marker)
% Format: ( periodic marker, donor marker, rotation_center_x, rotation_center_y,
% rotation_center_z, rotation_angle_x-axis, rotation_angle_y-axis,
% rotation_angle_z-axis, translation_x, translation_y, translation_z, ... )
MARKER_PERIODIC= ( SIDE-, SIDE+, 0 0 0, 72 0 0, 0 0 0)

Kind Regards,
Peter

[pcg]

I've not used this myself, but looking at the code I think the purpose of that marker it to specify a stationary shroud (in an otherwise rotating domain).
It is not a boundary condition by itself, you still need to have a Euler/Heatflux/Isothermal boundary condition for that marker.