불확실성 요소들을 고려한 3차원 날개의 공력 최적설계A 3-D Wing Aerodynamic Design Optimization Considering Uncertainty Effects

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This study presents results of aerodynamic wing optimization under uncertainties. To consider uncertainties, an alternative strategy for reliability-based design optimization(RBDO) is developed. The strategy utilizes a single loop algorithm and a sequential approximation optimization(SAO) technique. The SAO strategy relies on the trust region-SQP framework which validates approximated functions at every iteration. Further improvement in computational efficiency is achieved by applying the same sensitivity of limit state functions in the reliability analysis and in the equivalent deterministic constraint calculation. The framework is examined by solving an analytical test problem to show that the proposed framework has the computational efficiency over existing methods. The proposed strategy enables exploiting the RBDO technique in aerodynamic design. For the aerodynamic wing design problem, the solution converges to the reliable point satisfying the probabilistic constraints.
Publisher
한국전산유체공학회
Issue Date
2004-03
Language
KOR
Citation

한국전산유체공학회 2004년도 춘계 학술대회, pp.9 - 16

URI
http://hdl.handle.net/10203/151903
Appears in Collection
AE-Conference Papers(학술회의논문)
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