CFD-EFD Mutual Validation Using a CFD Solver Based on Unstructured Meshes Developed at KAIST KAIST 비정렬격자 기반 CFD 해석자를 이용한 CFD-EFD 상호 비교 검증

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Flow fields around a KARI-11-180 airfoil, SDM and transonic body are numerically simulated by using an unstructured meshes based compressible flow solver developed at KAIST. RANS equations are solved to analyse the flow fields and Roe's FDS method is adopted to evaluate convective fluxes. Turbulence effect of the flow fields is modeled by a SA model, SST model and gamma Re--(theta t) model. It is found that smaller drag coefficients are predicted for the KARI-11-180 airfoil when a transition phenomenon is considered and small deviations exist between CFD and EFD results. For the SDM, flow separation is observed at a leading edge and calculated aerodynamic properties show similar tendencies to experimental results. A shock wave on main wings of the transonic body is successfully captured by the present flow solver at a Mach number 0.9. Estimated pressure profiles by means of the present CFD method also agree well with those of wind tunnel results.
Publisher
KOREAN SOC AERONAUTICAL & SPACE SCIENCES
Issue Date
2017-03
Language
Korean
Article Type
Article
Citation

JOURNAL OF THE KOREAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, v.45, no.3, pp.259 - 267

ISSN
1225-1348
DOI
10.5139/JKSAS.2017.45.3.259
URI
http://hdl.handle.net/10203/225679
Appears in Collection
AE-Journal Papers(저널논문)
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