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네트워크형 지하도로 입체교차로 내의 교통환기력에 의한 환기 특성

Ventilation Characteristics by Traffic Piston Effect in Underground Network-type Road Junction

  • Kim, Nam-Young (Mechanical and Electrical Division, Sambo Engineering) ;
  • Jo, Jong-Bok (Mechanical and Electrical Division, Sambo Engineering) ;
  • Han, Hwataik (Department of Mechanical Engineering, Kookmin University)
  • 투고 : 2015.04.14
  • 심사 : 2015.06.01
  • 발행 : 2015.07.10

초록

This paper investigates the ventilation characteristics in a two-dimensional underground network junction composed of four main lines interconnected by eight ramps. Simple one-dimensional models cannot be applied to network junctions since there are interferences of traffic piston effects in the main lines and at the ramps. A numerical algorithm was developed to analyze the pressure and airflow distributions iteratively. The Darcy-Weisbach equation was used to calculate the piston effects by traffic flows, and a Hardy Cross iteration was conducted for network analysis at the interconnected junction. The results show interesting ventilation characteristics and CO concentration distributions depending on system parameters such as vehicle speed, tunnel diameter, and other junction configurations.

키워드

참고문헌

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피인용 문헌

  1. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256