[Sakun]

Hi,

I am trying to validate my ongoing research through SU2 turbo functions. I have simulated turbomachinery testcases and trying make my test case according to it.
My case is almost similar to “transonic _stator_2D” case , so I am editing .cfg file according to my test specifications. Picture of mesh attached as “Geo”.
Validation specifications are attached as “Specs”
To begin with I have edited “COMPRESSIBLE FREE-STREAM DEFINITION” section below,

MACH_NUMBER= 0.1
AOA= 0.0
FREESTREAM_PRESSURE= 8.23221E+04
FREESTREAM_TEMPERATURE= 308.56
FREESTREAM_DENSITY= 0.9308
FREESTREAM_OPTION= TEMPERATURE_FS
FREESTREAM_TURBULENCEINTENSITY = 0.05
FREESTREAM_TURB2LAMVISCRATIO = 100.0
INIT_OPTION= TD_CONDITIONS

Then BOUNDARY CONDITION DEFINITION” section,

MARKER_HEATFLUX= (CASCADE, 0.0)
MARKER_PERIODIC= ( TOP, BOTTOM, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.03044, 0.0 )

(Pitch is 0.03044)

INFLOW/OUTFLOW BOUNDARY CONDITION SPECIFIC FOR TURBOMACHINERY section,
Inflow angle is defined (45.83+5.0) as 0.631, -0.775 for Flow dir-norm and Flow dir-tang respectively.

MARKER_TURBOMACHINERY= (INLET, OUTLET)
MARKER_ANALYZE= (INLET, OUTLET)
MARKER_GILES= (INLET, TOTAL_CONDITIONS_PT, 115775, 340.2, 0.631, -0.775, 0.0, 0.7, 1.0, OUTLET, STATIC_PRESSURE, 97251, 0.0, 0.0, 0.0, 0.0, 1.0, 1.0)
SPATIAL_FOURIER= YES
TURBOMACHINERY_KIND = AXIAL
TURBO_PERF_KIND = COMPRESSOR
RAMP_OUTLET_PRESSURE= NO
RAMP_OUTLET_PRESSURE_COEFF= (700000.0, 10.0, 500)
AVERAGE_PROCESS_KIND= MIXEDOUT
PERFORMANCE_AVERAGE_PROCESS_KIND= MIXEDOUT
MIXEDOUT_COEFF= (1.0, 1.0E-05, 15)
AVERAGE_MACH_LIMIT= 0.03

As for the error I am getting “SU2 has diverged (NaN detected)” (attached “NaN Detected” pic)


Can someone tell me what is the meaning of defining inlet flow angle in “MARKER_GILES” ? and how to solve NaN error.
also is there a way to define outlet flow angle for the OUTLET ?