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Institute
BTU
The present paper compares four different optimization
strategies for decoupled optimization in the context of
preliminary core engine design for aero engines. An
optimization with the AAO (All-At-Once) approach is
performed as a baseline and compared against the
performance and results of three cascaded optimization
strategies: CO (Collaborative Optimization), BLISS 2000
(Bi-Level Integrated System Synthesis) and ISOC (Interface
Segmentation Optimization Concept). The optimization
problem is based on a thermodynamic core engine model
representing an industrial application example. The results
are assessed with respect to typical requirements for
multidisciplinary core engine design. The impact of the used
optimization strategy on the performance of the optimization
concept is investigated and discussed.