[lqliang1222]

hello everyone,
Recently, I have been working on a two-dimensional axisymmetric ball head case. The calculation conditions are: incoming Mach number of 15.3, velocity of 5280 m/s, temperature of 293 K, pressure of 664 Pa, Reynolds number of 14605, and isothermal wall conditions. The wall temperature is 1200 K, the ball head radius is 6.35 mm, and the characteristic length of Reynolds number is the head radius of the model. However, when I drew the grid and set up the configuration file, running su2 stopped shortly after. I guess my configuration file was the only problem, I hope to find a solution，thanks

[lqliang1222]

What is the content of my configuration file is：
% ------------- DIRECT, ADJOINT, AND LINEARIZED PROBLEM DEFINITION ------------%
%
SOLVER= NEMO_NAVIER_STOKES
MATH_PROBLEM= DIRECT
RESTART_SOL= NO
AXISYMMETRIC= YES

% ----------- COMPRESSIBLE AND INCOMPRESSIBLE FREE-STREAM DEFINITION ----------%
%
MACH_NUMBER=15.3
AOA= 0.0
SIDESLIP_ANGLE= 0.0
FREESTREAM_PRESSURE=664
FREESTREAM_TEMPERATURE=293
FREESTREAM_TEMPERATURE_VE=293
REYNOLDS_LENGTH= 0.00635
%FREESTREAM_DENSITY= 0.001547
FREESTREAM_VELOCITY= (5280.00, 0.00, 0.00 )
INIT_OPTION=TD_CONDITIONS

% ---- NONEQUILIBRIUM GAS, IDEAL GAS, POLYTROPIC, VAN DER WAALS AND PENG ROBINSON CONSTANTS -------%
%
FLUID_MODEL= SU2_NONEQ
GAS_MODEL= AIR-5
GAS_COMPOSITION= (0.77, 0.23, 0.0, 0.0, 0.0)
TRANSPORT_COEFF_MODEL= GUPTA-YOS

% -------------------- BOUNDARY CONDITION DEFINITION --------------------------%
%
MARKER_ISOTHERMAL=(wall, 1200.0)
MARKER_FAR= (far, exit)
MARKER_SYM= (symm)
MARKER_PLOTTING= (wall)
MARKER_MONITORING= (wall)

%CATALYTIC_WALL= (wall)
%SUPERCATALYTIC_WALL= YES
%SUPERCATALYTIC_WALL_COMPOSITION= (0.75430935, 0.00713, 0.01026, 0.00000065, 0.2283)

% ------------- COMMON PARAMETERS DEFINING THE NUMERICAL METHOD ---------------%
%
NUM_METHOD_GRAD= WEIGHTED_LEAST_SQUARES
CFL_NUMBER= 3.0
ITER= 1000000
LINEAR_SOLVER= BCGSTAB
LINEAR_SOLVER_ERROR= 1E-6
LINEAR_SOLVER_ITER= 5

% -----------------------------------------------------------------------%
%
CONV_NUM_METHOD_FLOW= AUSM
MUSCL_FLOW= YES
SLOPE_LIMITER_FLOW= VENKATAKRISHNAN
VENKAT_LIMITER_COEFF= 0.05
TIME_DISCRE_FLOW= EULER_IMPLICIT

% --------------------------- CONVERGENCE PARAMETERS --------------------------%
%
CONV_RESIDUAL_MINVAL= -6
CONV_STARTITER= 10

% ------------------------- INPUT/OUTPUT INFORMATION --------------------------%
%
MESH_FILENAME= lobb.su2
MESH_FORMAT= SU2
SOLUTION_FILENAME= restart_flow_gy.dat
RESTART_FILENAME= restart_flow_gy.dat
TABULAR_FORMAT= TECPLOT
CONV_FILENAME= convergence
VOLUME_FILENAME= soln_volume
SURFACE_FILENAME= soln_surface
OUTPUT_WRT_FREQ= 2500
SCREEN_OUTPUT= (INNER_ITER, RMS_DENSITY_0, RMS_DENSITY_1, RMS_DENSITY_2, RMS_DENSITY_3, RMS_DENSITY_4, RMS_ENERGY, RMS_ENERGY_VE, LIFT, DRAG, TOTAL_HEATFLUX）

[bigfootedrockmidget]

why did SU2 stop? Did the solution diverge or was there another error?

[lqliang1222]

yeah,the solution diverge,after making some modifications to the configuration file, it can now run normally, but I don't understand how the boundary condition MARK OUT LET=(out, 100) is solved for 100,
This is my modified configuration file, with the main change being the boundary conditions section，
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% SU2 configuration file %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% ------------- DIRECT, ADJOINT, AND LINEARIZED PROBLEM DEFINITION ------------%
%
SOLVER= NEMO_NAVIER_STOKES
MATH_PROBLEM= DIRECT
RESTART_SOL= NO
AXISYMMETRIC= YES


% ----------- COMPRESSIBLE AND INCOMPRESSIBLE FREE-STREAM DEFINITION ----------%
%
SYSTEM_MEASUREMENTS= SI
MACH_NUMBER=15.3
AOA= 0.0
SIDESLIP_ANGLE= 0.0
FREESTREAM_PRESSURE=664
FREESTREAM_TEMPERATURE=293
FREESTREAM_TEMPERATURE_VE=293
INIT_OPTION=TD_CONDITIONS

% ---- NONEQUILIBRIUM GAS, IDEAL GAS, POLYTROPIC, VAN DER WAALS AND PENG ROBINSON CONSTANTS -------%
%
FLUID_MODEL= SU2_NONEQ
GAS_MODEL= AIR-5
GAS_COMPOSITION= (0.77, 0.23, 0.0, 0.0, 0.0)
%TRANSPORT_COEFF_MODEL= GUPTA-YOS

% -------------------- BOUNDARY CONDITION DEFINITION --------------------------%
%
MARKER_ISOTHERMAL=(wall, 1200.0)
MARKER_FAR= (far)
MARKER_OUTLET=(out,100)
MARKER_SYM= (symm)
MARKER_PLOTTING= (wall)
MARKER_MONITORING= (wall)

% ------------- COMMON PARAMETERS DEFINING THE NUMERICAL METHOD ---------------%
%
NUM_METHOD_GRAD= WEIGHTED_LEAST_SQUARES
CFL_NUMBER= 0.5
ITER= 1000000
LINEAR_SOLVER= BCGSTAB
LINEAR_SOLVER_ERROR= 1E-6
LINEAR_SOLVER_ITER= 5

% -----------------------------------------------------------------------%
%
CONV_NUM_METHOD_FLOW= AUSM
MUSCL_FLOW= YES
SLOPE_LIMITER_FLOW= VENKATAKRISHNAN
VENKAT_LIMITER_COEFF= 0.05
TIME_DISCRE_FLOW= EULER_IMPLICIT

% --------------------------- CONVERGENCE PARAMETERS --------------------------%
%
CONV_RESIDUAL_MINVAL= -10
CONV_STARTITER= 10

% ------------------------- INPUT/OUTPUT INFORMATION --------------------------%
%
MESH_FILENAME= lobb.su2
MESH_FORMAT= SU2
SOLUTION_FILENAME= restart_flow_gy.dat
RESTART_FILENAME= restart_flow_gy.dat
TABULAR_FORMAT= TECPLOT
CONV_FILENAME= convergence
VOLUME_FILENAME= soln_volume
SURFACE_FILENAME= soln_surface
OUTPUT_WRT_FREQ= 2500
SCREEN_OUTPUT= (INNER_ITER, RMS_DENSITY_0, RMS_DENSITY_1, RMS_DENSITY_2, RMS_DENSITY_3, RMS_DENSITY_4, RMS_ENERGY, RMS_ENERGY_VE, LIFT, DRAG, TOTAL_HEATFLUX)