[zjqzjs]

I want to use a non-reflected outlet boundary condition in my simulation. I found the discribtion of Giles boundary condition in config_template.cfg as follow,

% Giles boundary condition for inflow, outfolw and mixing-plane
% Format inlet: ( marker, TOTAL_CONDITIONS_PT, Total Pressure , Total Temperature,
% Flow dir-norm, Flow dir-tang, Flow dir-span, under-relax-avg, under-relax-fourier)
% Format outlet: ( marker, STATIC_PRESSURE, Static Pressure value, -, -, -, -, under-relax-avg, under-relax-fourier)
% Format mixing-plane in and out: ( marker, MIXING_IN or MIXING_OUT, -, -, -, -, -, -, under-relax-avg, under-relax-fourier)
MARKER_GILES= ( NONE )
%
% This option insert an extra under relaxation factor for the Giles BC at the hub
% and shroud (under relax factor applied, span percentage to under relax)
GILES_EXTRA_RELAXFACTOR= ( 0.05, 0.05)
%
% YES Non reflectivity activated, NO the Giles BC behaves as a normal 1D characteristic-based BC
SPATIAL_FOURIER= NO

For the format of outlet, there are some sign of - in the template. Can someone give me a successful example to use this boundary condition?

Thank you.

Jiaquan

[monika_1387]

Hi, Did you figured out how to put this GILES BC for nozzle flow at outlet BC? Because I am trying to put NRBC BC but thats not working so trying for GILES if that works.

Can you please suggest?

Originally Posted by zjqzjs

I want to use a non-reflected outlet boundary condition in my simulation. I found the discribtion of Giles boundary condition in config_template.cfg as follow,

% Giles boundary condition for inflow, outfolw and mixing-plane
% Format inlet: ( marker, TOTAL_CONDITIONS_PT, Total Pressure , Total Temperature,
% Flow dir-norm, Flow dir-tang, Flow dir-span, under-relax-avg, under-relax-fourier)
% Format outlet: ( marker, STATIC_PRESSURE, Static Pressure value, -, -, -, -, under-relax-avg, under-relax-fourier)
% Format mixing-plane in and out: ( marker, MIXING_IN or MIXING_OUT, -, -, -, -, -, -, under-relax-avg, under-relax-fourier)
MARKER_GILES= ( NONE )
%
% This option insert an extra under relaxation factor for the Giles BC at the hub
% and shroud (under relax factor applied, span percentage to under relax)
GILES_EXTRA_RELAXFACTOR= ( 0.05, 0.05)
%
% YES Non reflectivity activated, NO the Giles BC behaves as a normal 1D characteristic-based BC
SPATIAL_FOURIER= NO

For the format of outlet, there are some sign of - in the template. Can someone give me a successful example to use this boundary condition?

Thank you.

Jiaquan

[nitish_anand]

Instead of '-' just use 0 as these values are not required by the code for OUTLET, MIXING_IN or MIXING_OUT.