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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.6
- 수록면
- 17 - 23 (7page)
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The turbulent flow and vortex shedding phenomena around pantograph panhead of high speed train were investigated and compared with available experimental data and other simulations. The pantograph head was simplified to be a square-cross-section pillar and assumed to be no interference with other bodies. The Reynolds number (Re) was 22,000. The LES(large eddy simulation) of FDS code was applied to solve the momentum equations and the Wener-Wengle wall model was employed to solve the near wall turbulent flow. Smagorinsky model(C?=0.2) was used as SGS(subgrid scale) model. The total grid numbers were about 9 millions and the analyzed domain was divided into 12 multi blocks which were communicated with each other by MPI. The time-averaged mainstream flows were calculated and well compared with experimental data. The phased-averaged quantities had also a good agreement with experimental data. The near-wall turbulence should be carefully treated by wall function or direct resolution to get successful application of LES methods.
목차
1. 서론
2. 수치해석적 연구
3. 해석 결과 및 고찰
4. 결론
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참고문헌
참고문헌 (16)
참고문헌 신청
1. [학술대회논문] - Rho, J. H / 2008 / An Experimental Study on the Aerodynamic Characteristics of the Robust Optimized Shape of Pantograph Panhead / Spring Conference & Annual Meeting of the Korean Society for Railway : 2204 ~ 2209
2. [학술대회논문] - Rho, J. H / 2008 / Study on the Aerodynamic Analysis of the High-Speed EMU / Spring Conference & Annual Meeting of the Korean Society for Railway : 1152 ~ 1157
3. [단행본] - Fox, R. W / 1994 / Introduction to Fluid Mechanics / WILEY
5. [학술대회논문] - Kim, K. N / 2009 / Evaluation of the Aerodynamic Characteristic on the Pantograph Model / Spring Conference & Annual Meeting of the Korean Society for Railway : 1152 ~ 1157
6. [학술지(정기간행물)] - Lyn, D.A / 1994 / The Flapping Shear Layer Formed by Flow Separation from the Forward Corner of a Square Cylinder / Journal of Fluids Mechanics 267 : 353 ~ 376
2. [학술대회논문] - Rho, J. H / 2008 / Study on the Aerodynamic Analysis of the High-Speed EMU / Spring Conference & Annual Meeting of the Korean Society for Railway : 1152 ~ 1157
3. [단행본] - Fox, R. W / 1994 / Introduction to Fluid Mechanics / WILEY
5. [학술대회논문] - Kim, K. N / 2009 / Evaluation of the Aerodynamic Characteristic on the Pantograph Model / Spring Conference & Annual Meeting of the Korean Society for Railway : 1152 ~ 1157
6. [학술지(정기간행물)] - Lyn, D.A / 1994 / The Flapping Shear Layer Formed by Flow Separation from the Forward Corner of a Square Cylinder / Journal of Fluids Mechanics 267 : 353 ~ 376
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UCI(KEPA) : I410-ECN-0101-2013-422-000429306