Aerodynamic Shape Optimization of a Gas Turbine Engine Air-Delivery Duct
Publication: Journal of Aerospace Engineering
Volume 33, Issue 4
Abstract
We discuss a methodology for multiobjective optimization of the U-shaped air-delivery duct, which is a part of a turboprop engine intake system. The methodology combines and extends existing techniques to optimize the real-world engineering problem efficiently. The procedure utilizes Kriging models for the approximation of objective functions. We use the Expected Hypervolume Improvement method for improving the Kriging models accuracy and creating the Pareto front. The calculations are parallel and asynchronous, allowing to reduce the time needed for finding the optimal designs. The algorithm is resistant to solver failures and mesh issues. We perform the optimization with a purpose to satisfy two objectives: reduction of a total pressure loss across the duct and improvement/not-worsening of a distortion coefficient at the duct outlet. To obtain the improvement, we modify the shape of the duct within limits to fulfill geometric constraints. We use 30 design variables to control the deformation of the duct surface based on radial basis function interpolation.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available in a repository or online in accordance with funder data retention policies (Łaniewski-Wołłk 2016, “ASynchronious Efficient Multiobjective Optimization,” GitHub repository, https://github.com/llaniewski/ASEMOO).
Some or all data, models, or code used during the study were provided by a third party (the base design of the air-delivery duct). Direct requests for these materials may be made to the provider as indicated in the Acknowledgments.
Acknowledgments
The authors would like to thank W. Stalewski and J. Żółtak, who provided the base design of the air-delivery duct (Stalewski and Żółtak 2014). This work was partly prepared under the ESPOSA (Grant No. FP7-AAT-2011-RTD01 284859) and UMRIDA (Grant No. ACP3-GA-2013-605036) projects.
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Published In
Journal of Aerospace Engineering
Volume 33 • Issue 4 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 18, 2019
Accepted: Feb 24, 2020
Published online: May 13, 2020
Published in print: Jul 1, 2020
Discussion open until: Oct 13, 2020
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