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논문 기본 정보

자료유형
학술저널
저자정보
이득선 (서울과학기술대학교) 조정민 (서울과학기술대학교) 이명호 (서울과학기술대학교) 성재용 (서울과학기술대학교)
저널정보
대한설비공학회 설비공학논문집 설비공학논문집 제30권 제3호
발행연도
2018.3
수록면
123 - 129 (7page)
DOI
10.6110/KJACR.2018.30.3.123

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In this study, CFD is used to compare and analyze the flow characteristics using reflected pressure wave during the intersection of two trains in straight tunnel. Two tunnels of different lengths; 600 m and 3,400 m were designed and numerical analysis of the flow characteristics of two tunnels carried out by setting the crossing state of the two trains at a constant velocity of 27 m/s form the center of the tunnel. The simulation model was designed using the actual tunnel and subway dimensions The train motion was achieved by using the moving mesh method. For the numerical analysis, k-ω standard turbulence model and an ideal gas were used to set the flow conditions of three-dimensional, compressible and unsteady state. In the analysis results, it was observed that the inside of the long tunnel without interference of the reflected pressure wave was maintained at a pressure lower than the atmospheric pressure and that the flow direction was determined by the pressure gradient and shear flow. On the other hand, the flow velocity in the short tunnel was faster and the pressure fluctuation was noted to have increased due to the reflected pressure wave, with more vortices formed. In addition, the flow velocity was noted to have changed more irregularly.

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Abstract
1. 서론
2. 수치해석 기법
3. 결과 및 고찰
4. 결론
References

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