Numerical Study on the Water Monitor Extinction System for Performance Verification

Yangkyun  Kim; Yong-Ho  Yoo; Jin-Ouk  Park; Byung-Jik Park; Hwi-Seong  Kim

doi:10.12972/ksmer.2017.54.6.611

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2017 Vol.54, Issue 6 Next Page

Research Paper

Numerical Study on the Water Monitor Extinction System for Performance Verification 물 분무 소화설비 성능검토를 위한 수치해석 연구

31 December 2017. pp. 611-618

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Abstract

This paper describes numerical simulation on the water jet extinction system for systematical verification of its performance applied in double deck tunnel in great depth underground space. Numerical model applied is 2D Eulerian multiphase model, and its results are validated with the equation of motion and experiment. Simulation results show that water volume fraction is not over 0.5 in whole nozzle inlet pressure applied. Also, water volume fraction on the ground of tunnel is increased according to an increase in jet discharge pressure in case of 0° of jet inclination angle, while water volume fraction on the ground of tunnel is decreased according to an increase in jet discharge pressure in case of 5° and 11° of jet inclination angle.

Keywords

Water jet extinction system

Eulerian multiphase model

Water volume fraction

Discharge distance

Projection area

본 연구에서는 대심도 복층터널 방재에 사용되는 물 분무 소화설비의 체계적인 성능검토를 위해 수치해석을 이용하였다. 선택된 수치해석 기법은 2차원 Eulerian 다상유동 모델이고 수치해석 기법의 검증을 위해 운동량 방정식 및 물 분무 실물시험값을 이용하였다. 수치해석 결과 적용된 모든 노즐 출구 압력에서 물의 체적분율은 0.5를 넘지 않 았다. 또한 물의 분사각도가 없는 경우는 노즐의 출구압력이 증가함에 따라 바닥에 퍼지는 물의 체적분율이 증가하였 지만 물의 분사각도가 올라가면 노즐의 출구압력이 증가함에 따라 바닥에 퍼지는 물의 체적분율이 감소하였다.

키워드

물 분무 소화설비

Eulerian 다상유동

물 체적분율

분사거리

분사면적

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :6
Pages :611-618
Received Date : 2016-11-28
Revised Date : 2016-12-22
Accepted Date : 2017-12-22
DOI :https://doi.org/10.12972/ksmer.2017.54.6.611

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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