Effects of sensitivity analysis on aerodynamic design optimization

Date

1995-12-01

Author

Eyi, Sinan

Metadata

Show full item record

Item Usage Stats

32
views

0
downloads

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.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029423309&origin=inward
https://hdl.handle.net/11511/71107

Collections

Unverified, Conference / Seminar

Suggestions

OpenMETU
Core

Effects of sensitivity derivatives on aerodynamic design optimization Eyi, Sinan (Informa UK Limited, 2007-10-01) The effects of sensitivity derivatives on the performance of aerodynamic design optimization were evaluated. Sensitivity derivatives were obtained by both analytical and finite-difference approaches. A sensitivity code was developed to analytically obtain sensitivity derivatives 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 finit...
Aerodynamic sensitivity analysis in inverse design Kocabiçak, E.; Eyi, Sinan (2000-12-01) The effects of sensitivity analysis on the performance of aerodynamic design were evaluated. Sensitivities were obtained by both analytical and finite-difference approach. A sensitivity code was developed to analytically obtain sensitivities using the material derivative concept of continuum mechanics. Several 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...
Inverse design of compressor cascades on parallel computers Özhamam, M.; Eyi, Sinan (2002-01-01) In this paper, the performance improvements of an inverse compressor cascade design are investigated. A Navier-Stokes code is used for flow analysis. A least-square optimization method is used to minimize pressure discrepancies between initial and target cascades. In optimization process, most of the CPU time is associated with the sensitivity analyses. Sensitivities are evaluated on parallel computers by using a finite difference approach. Results show that, analyzing sensitivities on parallel computers re...
Büyük Oranda Şekil Değiştirebilen Kanatların Aerodinamik ve Yapısal Tasarımı Ünlüsoy, Levent; Körpe, Durmuş Sinan; Şahin, Melin; Özgen, Serkan; Yaman, Yavuz (2012-06-20) Bu çalışmada, son yıllarda göreve uyumlu havacılık yapıları ve malzemelerinin üretim teknolojilerindeki gelişmelerle ortaya çıkan ve uçakların havadayken farklı görev evrelerinde (dalış, tırmanma, düz uçuş, dönüş, bekleme, vb.) en iyi performansı verebilecek şekilde uçabilmesini sağlayabilecek, büyük oranda şekil değiştirebilen (fully morphing) kanatların aerodinamik ve yapısal tasarım süreci ve en iyileştirilmesi üzerine izlenen yol anlatılmıştır.
Design of lap-spliced bars: Is simplification possible? Canbay, Erdem (2006-05-01) While the estimation accuracy of the strength of lap splices has been improving, the complexity of design for reinforcement development has progressively increased. This research study investigates the development of a simple and reliable design expression. Equations on development and splices of reinforcement in ACI 318-05 along with other design proposals are critically assessed in light of 203 unconfined and 278 confined beam tests where the splice region was subjected to constant moment. A simple design...

Citation Formats

S. Eyi, “Effects of sensitivity analysis on aerodynamic design optimization,” 1995, vol. 232, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029423309&origin=inward.