Effects of sensitivity analysis on aerodynamic design optimization


Eyi S. , Lee K.

Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San-Francisco, Costa Rica, 12 - 17 November 1995, vol.232, pp.1-8 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 232
  • City: San-Francisco
  • Country: Costa Rica
  • Page Numbers: pp.1-8

Abstract

The effects of sensitivities on the performance of aerodynamic design optimization were evaluated. Sensitivities were obtained by both analytical and finite-difference approaches. A direct differentiation method was developed to analytically obtain sensitivities for the two-dimensional Euler equations using the material derivative concept of continuum mechanics. Several inverse design optimizations were performed to evaluate the merits of the analytical approach in comparison with the finite-difference approach. The results show that the analytical approach provides accurate sensitivities consistently, improves the convergence of the design cycle, and hence reduces the design cost.