지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.3
- 수록면
- 114 - 122 (9page)
- DOI
- 10.6112/kscfe.2023.28.1.114
이용수
초록· 키워드
오류제보하기
The impact of multi-block mesh refinement on automobile aerodynamics was investigated using three refinement methods: (1) overall mesh refinement, (2) ground mesh refinement, and (3) prism layer control. The open source CFD code, OpenFOAM V10, was utilized and simulations were conducted on the full-scale Notchback DrivAer model. For each method, the effects of mesh refinement were analyzed by refining different regions. In the overall mesh refinement study, successive multi-block grid refinement regions were established - the grid size becomes finer as the block is closer to the car surface. The lift coefficient was affected by grid refinement in regions near the automobile body. The ground mesh refinement study was conducted by controlling two grid sizes related to the ground region: volume mesh and surface mesh. The prediction of drag coefficient was fairly robust with ground region refinement, and the lift coefficient was more accurate with a smaller ground region grid. However, an excessively small surface grid reduced the accuracy of both drag and lift coefficients. In the prism layer study, the accuracy of the drag coefficient was independent of the prism layer setup, while the layer thickness and expansion ratio had a significant impact on the lift coefficient.
목차
1. 서론
2. 이론적 배경
3. 해석 방법 및 격자 생성
4. 해석 결과 및 고찰
5. 결론
References
참고문헌 (16)
참고문헌 신청
1984, Ahmed, S.R., Ramm, G. and Faltin, G., "Some Salient Features of the Time-Averaged Ground Vehicle Wake," SAE transactions, pp.473-503.
1998, Cogotti, A., "A parametric study on the ground effect of a simplified car model," SAE transactions, pp.180-204.
2005, Menter, F. and Egorov, Y., "A scale adaptive simulation model using two-equation models," 43rd AIAA aerospace sciences metting and exhibit, p.1095.
2012, Heft, A.I., Indinger, T. and Adams, N.A., "Introduction of a new realistic generic car model for aerodynamic investigations," SAE Technical Paper, No.2012-01-0168.
2015, Mia, L., Mack, S. and Indinger, T., "Experimental and numerical investigation of automotive aerodynamics using DrivAer model," International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Vol.57106,
1998, Cogotti, A., "A parametric study on the ground effect of a simplified car model," SAE transactions, pp.180-204.
2005, Menter, F. and Egorov, Y., "A scale adaptive simulation model using two-equation models," 43rd AIAA aerospace sciences metting and exhibit, p.1095.
2012, Heft, A.I., Indinger, T. and Adams, N.A., "Introduction of a new realistic generic car model for aerodynamic investigations," SAE Technical Paper, No.2012-01-0168.
2015, Mia, L., Mack, S. and Indinger, T., "Experimental and numerical investigation of automotive aerodynamics using DrivAer model," International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Vol.57106,
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