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Description of input/output files

optim_params.cfg

This configuration file is all the user needs to modify to setup a nozzle optimization. It makes it possible to:

• define a hierarchy of fidelity levels (governing equations, mesh resolution, error tolerance etc.),
• define the input design variables to the model (e.g. control points, flow conditions) and the output functions (thrust, cycles to failure, etc.),
• specify various parameters to the simulation: mission, nozzle structure (number of baffles), parallel options, I/O format, etc.

design_var.dat

This file provides the list of input design variables, which must be consistent with those defined in the .cfg file. In case MULTIF is used along with Dakota, a params.in file is parsed, which also specifies whether to output gradients.