CONSTRAINED OPTIMIZATION OF NACELLE SHAPES IN EULER FLOW USING SEMIANALYTICAL SENSITIVITY ANALYSIS

Citation
Pa. Lambert et al., CONSTRAINED OPTIMIZATION OF NACELLE SHAPES IN EULER FLOW USING SEMIANALYTICAL SENSITIVITY ANALYSIS, Structural optimization, 10(3-4), 1995, pp. 239-246
Citations number
NO
Categorie Soggetti
Computer Science Interdisciplinary Applications",Engineering,Mechanics
Journal title
ISSN journal
09344373
Volume
10
Issue
3-4
Year of publication
1995
Pages
239 - 246
Database
ISI
SICI code
0934-4373(1995)10:3-4<239:COONSI>2.0.ZU;2-G
Abstract
The problem of aerodynamic shape optimization in Euler flow is address ed. B-splines are used for parametrization of the shape. Cheap gradien t calculation is obtained via sensitivity analysis and the solution of an adjoint equation; pseudo second-order spatial accuracy is achieved by means of a semianalytical formulation. As a validation of the appr oach, several inverse and constrained optimization test problems are p resented with emphasis on civil engine nacelle design. The handling of nondifferentiable quantities (such as maxima) in cost functions is al lowed for via the use of the Kreisselmeier-Steinhauser function.