[David_002]

Hi guys,
I'm finding an error when running a programm

The tutorial I'm running is the "Unconstrained shape design of a transonic inviscid airfoil at a cte. AoA" bu also adding now a constraint on the CL.

I have just added the following information to the configuration template:

% -------------------------- CL DRIVER DEFINITION -----------------------------%
%
% Activate fixed lift mode (specify a CL instead of AoA, NO/YES)
FIXED_CL_MODE= YES
%
% Target coefficient of lift for fixed lift mode (0.80 by default)
TARGET_CL= 0.724
%
% Estimation of dCL/dAlpha (0.2 per degree by default)
DCL_DALPHA= 0.2
%
% Maximum number of iterations between AoA updates
UPDATE_AOA_ITER_LIMIT= 100
%
% Number of iterations to evaluate dCL/dAlpha at the end of the simulation
ITER_DCL_DALPHA= 500
%
% Evaluate dObjFunc/dCL during runtime (YES) or use the value stored in the
% direct solution file (NO).
EVAL_DOF_DCX= NO


It starts iterating correctly, but at some point the error shown in the picture appears.

Should I modify more lines in the code in order to add this?
How can I try to solve this issue?

Thank you for your time and help,

David

[bigfootedrockmidget]

Does the simulation stop when the warning occurs? It means that the deformation is so large that it reaches the maximum deformation limit. The max. deformation is 0.1, so you can check in paraview if this is correct.