Adding additional design variables, constraints, or changing to a different objective

The design variables, constraints, and the objective for the optimization are all specified in the run_file.

1. Adding additional design variables

   The design variables are specified using OpenMDAO independent variable component.

   comp = om.IndepVarComp()
   comp.add_output(<design_variable_name>, shape=shape, val=np.ones((shape)))
   

   Then, the user can add it to the optimization problem.

   prob = om.Problem()
   prob.model.add_design_var(<design_variable_name>, upper=upper_bd, lower=lower_bd)
   

2. Adding additional constraints or changing to a different objective

   The constraints and objective are the output for the optimization problem, which can be computed using one of the three methods described in Subsection 2 of this Section. Then, the user just need to specify

   prob.model.add_objective(<objective_name>)
   prob.model.add_constraint(<constraint_name>, upper=upper_bd, lower=lower_bd)
   

   in the run_file.