A method for designing gas turbine engine components using a coupled
parametric analysis of part geometry and flow control is disclosed.
Included are the steps of parametrically defining the geometry of the
duct wall shape, parametrically defining one or more flow control
actuators in the duct wall, measuring a plurality of performance
parameters or metrics (e.g., flow characteristics) of the duct and
comparing the results of the measurement with desired or target
parameters, and selecting the optimal duct geometry and flow control for
at least a portion of the duct, the selection process including
evaluating the plurality of performance metrics in a pareto analysis. The
use of this method in the design of inter-turbine transition ducts,
serpentine ducts, inlets, diffusers, and similar components provides a
design which reduces pressure losses and flow profile distortions.