Improving the efficiency of compressors has been one of the most important goals of researchers over the years. In this paper, three different methods are presented for parameterization and blade optimization of axial flow compressor. All methods consist of flow analysis tool, optimization algorithms, and parametric geometry generation tool, that are different in each approach. Objective functi...

In this paper, we present a scalable parallel framework, which employs grid computing technologies, for solving computationally expensive and intractable design problems. Using an aerodynamic airfoil design optimization problem as an example the application of the grid computing strategies is dis-

Abstract Within the DLR project VicToria an aerodynamic and aero-acoustic optimization of helicopter rotor blades is performed. During optimization, three independent flight conditions are considered: hover, cruise descent flight. The first two drive power requirements rotor, while loudest condition for current generations. To down required emitted noise, a multi-objective design approach coupl...

We describe ADJIFOR, an automated adjoint code generator for Fortran, and present preliminary results from the application of ADJIFOR to augment the CFL3D ow solver. Based on these initial results with CFL3D, we argue that, even in its infancy, ADJIFOR can deliver derivatives accurately and eeciently for use in aerodynamic shape optimization problems with 200 to 500 independent design variables.

An aerodynamic shape optimization method that treats the design of complex aircraft configurations subject to high fidelity computational fluid dynamics (CFD), geometric constraints and multiple design points is described. The design process will be greatly accelerated through the use of both control theory and distributed memory computer architectures. Control theory is employed to derive the ...