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Adjoint-Based Design Optimization of Vortex Generator in an S-Shaped Subsonic Inlet

Cited 11 time in Web of Science Cited 17 time in Scopus
Authors
Yi, JunSok; Kim, Chongam; Lee, Byung Joon
Issue Date
2012-11
Publisher
American Institute of Aeronautics and Astronautics
Citation
AIAA JOURNAL Vol.50 No.11, pp. 2492-2507
Keywords
공학
Abstract
This paper deals with an adjoint-based design optimization of vortex generators for the performance improvement of an S-shaped subsonic inlet, the Royal Aircraft Establishment intake model 2129. To enhance the flow quality entering the engine face maximally, the vortex generators are independently optimized with five design parameters per each vortex generator (a total of 55 design variables). To increase the design efficiency, the source term model of the vortex generator is employed. The original source term model, which does not reflect a small change in position and thus has difficulties in differentiation for sensitivity analysis, is modified into a differentiable source term model. To deal with a large number of design variables, the gradient-based design optimization method using the discrete adjoint approach is employed to minimize the distortion coefficient while maintaining the baseline total pressure recovery ratio. A total of five design cases are conducted to validate the proposed design approach, to obtain the optimized vortex generators, and to confirm their enhanced performance. Through the proposed design process, the performance of the target inlet is remarkably improved, showing that the distortion coefficient decreases well over 70% while maintaining the total pressure recovery ratio.
ISSN
0001-1452
Language
English
URI
http://hdl.handle.net/10371/82309
DOI
https://doi.org/10.2514/1.J051687
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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