Publications

Detailed Information

Efficient Design Optimization of Vortex Generators in Subsonic Offset Inlet by Discrete Adjoint Approach

DC Field Value Language
dc.contributor.authorYi, JunSok-
dc.contributor.authorLee, Byung Joon-
dc.contributor.authorKim, Chongam-
dc.creator김종암-
dc.date.accessioned2013-05-23T02:27:17Z-
dc.date.available2013-05-23T02:27:17Z-
dc.date.issued2011-06-
dc.identifier.citation20th AIAA Computational Fluid Dynamics Conference, 2011-3535, pp. 1-22-
dc.identifier.urihttps://hdl.handle.net/10371/82441-
dc.description.abstractThis paper deals with the adjoint-based design optimization of vortex generators for the
performance improvement of the subsonic inlet. The RAE M2129, an S-shaped inlet, was
selected as the target geometry. Because of the differences in radius of curvature between the
port side (outer wall) and starboard side (inner wall), a centrifugal pressure gradient that
induces circulatory flow and secondary flow was developed. To minimize these detrimental
aerodynamic phenomena, a design optimization of vortex generators installed in subsonic
inlet was conducted. To maximize the flow quality enhancement, the effectiveness and
position of vortex generator are independently optimized by using the design parameters of
height, chord length, angle of incidence, axial position, and the circumferential position of
each vortex generator. To increase the design efficiency, the source term model of vortex
generator was employed instead of the gridded vortex generator. Since the original source
term model cannot reflect a small change in position and has difficulties in differentiation
for adjoint method, a differentiable source term model was developed. To deal with a large
number of design variables, the gradient-based design optimization method using the
discrete adjoint approach was employed to minimize the distortion coefficient while
maintaining the baseline total pressure recovery ratio. As a validation of the proposed design
approach, optimization with three kinds of design parameters representing the effectiveness
of each vortex generator (a total of 33 design variables) was carried out with the original
source term model. The designed vortex generator configuration yields a substantial
improvement in inlet performance, which confirms the validity of the proposed design
approach. After the validation process, a complete design with five design parameters per
each vortex generator (a total of 55 design variables) was performed by using the
differentiable source term model. Through the complete design process, the performance of
target inlet was remarkably improved; the distortion coefficient was decreased over 79%
while maintaining the total pressure recovery ratio.
-
dc.language.isoenen
dc.publisherAIAAen
dc.subject공학en
dc.titleEfficient Design Optimization of Vortex Generators in Subsonic Offset Inlet by Discrete Adjoint Approachen
dc.typeConference Paper-
dc.author.alternative이준석-
dc.author.alternative이병준-
dc.author.alternative김종암-
dc.identifier.doi10.2514/6.2011-3535-
dc.description.srndOAIID:oai:osos.snu.ac.kr:snu2011-01/104/0000004648/4-
dc.description.srndSEQ:4-
dc.description.srndPERF_CD:SNU2011-01-
dc.description.srndEVAL_ITEM_CD:104-
dc.description.srndUSER_ID:0000004648-
dc.description.srndADJUST_YN:N-
dc.description.srndEMP_ID:A001138-
dc.description.srndDEPT_CD:446-
dc.description.srndCITE_RATE:0-
dc.description.srndFILENAME:Efficient Design Optimization of Vortex Generators in Subsonic Offset Inlet.pdf-
dc.description.srndDEPT_NM:기계항공공학부-
dc.description.srndEMAIL:chongam@snu.ac.kr-
dc.description.srndCONFIRM:Y-
dc.identifier.srnd2011-01/104/0000004648/4-
Appears in Collections:
Files in This Item:
There are no files associated with this item.

Altmetrics

Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Share