Publication Date:
2019-06-28
Description:
Design of fluid dynamically efficient ducts is addressed through the combination of an optimization analysis with a three-dimensional viscous fluid dynamic analysis code. For efficiency, a parabolic fluid dynamic analysis was used. Since each function evaluation in an optimization analysis is a full three-dimensional viscous flow analysis requiring 200,000 grid points, it is important to use both an efficient fluid dynamic analysis and an efficient optimization technique. Three optimization techniques are evaluated on a series of test functions. The Quasi-Newton (BFGS, eta = .9) technique was selected as the preferred technique. A series of basic duct design problems are performed. On a two-parameter optimization problem, the BFGS technique is demonstrated to require half as many function evaluations as a steepest descent technique.
Keywords:
FLUID MECHANICS AND HEAT TRANSFER
Type:
GRC-E-DAA-TN55806
,
Pennsylvania State Univ., The Second International Conference on Inverse Design Concepts and Optimization in Engineering Sciences (ICIDES-2); p 147-166
Format:
application/pdf
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