한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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전동차용 Blow-Down HVAC 덕트 시스템의 유동 균일도 향상을 위한 수치적 연구

Numerical Study to Improve the Flow Uniformity of Blow-Down HVAC Duct System for a Train

  • 김준형 (현대로템 응용기술연구팀) ;
  • 노주현 (현대로템 응용기술연구팀)
  • 투고 : 2015.11.10
  • 심사 : 2015.12.10
  • 발행 : 2016.02.01
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초록

A HVAC(Heating Ventilation and Air Conditioning) is adapted to increase the comfort of the cabin environment for train. The train HVAC duct system has very long duct and many outlets due to the shape of a train set. the duct cross section shape is limited by a roof structure and equipments. Therefore, the pressure distribution and flow uniformity is an important performance indicator for the duct system. In this study, the existing blow down type HVAC duct system for a train was supplemented to improve the flow uniformity by applying a design method combining design of experiment (DOE) with numerical analysis. The design variables and the test sets were selected and the performance for each test set was evaluated using CFD(Computational Fluid Dynamics). The influence of each design variable on the system performance was analysed based on the results of the performance evaluation on the test sets. Furthermore, the optimized model, whose the flow uniformity was improved was produced using the direct optimization(gradient-based method). Finally, the performance of the optimized model was evaluated using numerical analysis, and it was confirmed that its flow uniformity has indeed improved.

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참고문헌

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피인용 문헌

  1. 2016년 CFD 분야 연구동향 vol.20, pp.2, 2016, https://doi.org/10.5293/kfma.2017.20.2.098