Fire Sci. Eng. Search

CLOSE


Fire Sci. Eng. > Volume 33(3); 2019 > Article
Fire Science and Engineering 2019;33(3):112-120.
DOI: https://doi.org/10.7731/KIFSE.2019.33.3.112    Published online June 30, 2019.
화재시뮬레이션에서 입력변수 및 모델 불확실도가 고려된 허용피난시간(ASET)에 관한 연구
한호식1, 황철홍2
1대전대학교 대학원 방재학과 대학원생
2대전대학교 소방방재학과 교수
Study on the Available Safe Egress Time (ASET) Considering the Input Parameters and Model Uncertainties in Fire Simulation
Ho-Sik Han1, Cheol-Hong Hwang2
1Graduate Student, Dept. of Disaster Prevention, Daejeon University
2Professor, Department of Fire and Disaster Prevention, Daejeon University
Correspondence:  Cheol-Hong Hwang, Tel: +82-42-280-2592, Fax: +82-42-280-2596, 
Email: chehwang@dju.ac.kr
Received: 7 April 2019   • Revised: 16 May 2019   • Accepted: 20 May 2019
요약
국내 PBD에서 화재시뮬레이션을 이용한 안전성 평가의 신뢰성을 개선시키기 위하여, 화재시뮬레이션의 입력변수 및 수치모델의 불확실도가 고려된 ASET의 평가방법에 대한 검토가 수행되었다. 이를 위해 영화관 및 오피스텔이 검토 대상으로 선정되었다. 주요 결과는 다음과 같다. 인명안전기준에 제시된 주요 물리량에 가장 큰 영향을 미치는 열발생률의 불확실도를 고려할 때, 온도, CO 및 가시도의 상당한 변화가 발생됨을 확인하였다. 또한 수치모델의 불확실도를 반영한 편향인자를 고려할 때, 온도 및 CO는 큰 변화가 없으나 FDS의 낮은 연기농도 예측성능으로 인하여 가시도는 크게 증가됨을 알 수 있었다. 마지막으로 국내 PBD에서 ASET이 대부분 가시도에 의해 결정되는 원인이 논의되었으며, 정확한 ASET 평가를 위해 화재시뮬레이션의 입력변수 및 수치모델의 불확실도 적용 방안이 제안되었다.
Abstract
To improve the reliability of a safety assessment using a fire simulation in domestic PBD, the evaluation method of ASET considering the uncertainties of the input parameters and numerical model of fire simulation was carried out. To this end, a cinema and officetel were selected as the representative fire spaces. The main results were as follows. Considering the uncertainty of the heat release rate, which has the greatest effect on the major physical quantities presented in the life safety standard, significant changes in temperature, CO, and visibility occurred. In addition, when the bias factors reflecting the uncertainty of the numerical model were applied, there were no significant changes in temperature and CO concentration. On the other hand, the visibility was increased considerably due to the low prediction performance of smoke concentration in FDS. Finally, the reason why the physical quantity determining the ASET in domestic PBD is mainly visibility was discussed, and the application of uncertainty of the input parameters and numerical model in a fire simulation was suggested for an accurate ASET evaluation.
Key Words: Performance-based design (PBD), Available safe egress time (ASET), Model uncertainty, Fire simulation
TOOLS
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 7 Crossref
  •    
  • 783 View
  • 47 Download
Related articles in Fire Sci. Eng.


ABOUT
BROWSE ARTICLES
EDITORIAL POLICY
AUTHOR INFORMATION
Editorial Office
Room 906, The Korea Science Technology Center The first building, 22, Teheran-ro 7 Gil, Gangnam-gu, Seoul, Republic of Korea
Tel: +82-2-555-2450/+82-2-555-2452    Fax: +82-2-3453-5855    E-mail: kifse@hanmail.net                

Copyright © 2022 by Korean Institute of Fire Science and Engineering.

Developed in M2PI

Close layer
prev next