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NURBS를 이용한 S형 천음속 흡입관 최적 설계 = Optimal shape design of a S-Shaped subsonic intake using NURBS
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이병준 | - |
dc.contributor.author | 김종암 | - |
dc.date.accessioned | 2009-08-11T06:23:18Z | - |
dc.date.available | 2009-08-11T06:23:18Z | - |
dc.date.issued | 2006-03 | - |
dc.identifier.citation | 한국전산유체공학회지, 제11권 제1호, pp.57-66 | en |
dc.identifier.issn | 1598-6071 | - |
dc.identifier.uri | http://uci.or.kr/G300-j15986071.v11n1p57 | - |
dc.identifier.uri | https://hdl.handle.net/10371/6951 | - |
dc.description.abstract | An optimal shape design approach is presented for a subsonic S-shaped intake using aerodynamic sensitivity analysis. Two-equation turbulence model is employed to capture strong counter vortices in the S-shaped duct more precisely. Sensitivity analysis is performed for the three-dimensional Navier-Stokes equations coupled with two-equation turbulence models using a discrete adjoint method For code validation, the result of the flow solver is compared with experiment data and other computational results of bench marking test. To study the influence of turbulence models and grid refinement on the duct flow analysis, the results from several turbulence models are compared with one another and the minimum number of grid points, which can yield an accurate solution is investigated The adjoin: variable code is validated by comparing the complex step derivative results. To realize a sufficient and flexible design space, NURBS equations are introduced as a geometric representation and a new grid modification technique, Least Square NURBS Grid Approximation is applied. With the verified flow solver, the sensitivity analysis code and the geometric modification technique, the optimization of S-shaped intake is carried out and the enhancement of overall intake performance is achieved The designed S-shaped duct is tested in several off-design conditions to confirm the robustness of the current design approach. As a result, the capability and the efficiency of the present design tools are successfully demonstrated in three-dimensional highly turbulent internal flow design and off-design conditions. | en |
dc.description.sponsorship | 본 연구는 서울대학교 BK21(Brain Korea 21)기계 사업단의 연구비 지원을 받아 수행되었음. | en |
dc.language.iso | ko | en |
dc.publisher | 한국전산유체공학회 = Korean Society of Computational Fluids Engineering | en |
dc.subject | Computational Fluid Dynamics(CFD) | en |
dc.subject | Aerodynamic shape design | en |
dc.subject | optimization | en |
dc.subject | discrete adjoint variable method | en |
dc.subject | NURBS | en |
dc.subject | intake design | en |
dc.title | NURBS를 이용한 S형 천음속 흡입관 최적 설계 = Optimal shape design of a S-Shaped subsonic intake using NURBS | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | Lee, B. J. | - |
dc.contributor.AlternativeAuthor | Kim, C. | - |
dc.contributor.AlternativeAuthor | Kim, Chongam | - |
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