Effect of Smoke Exhaust Openings Placement Direction of Tunnel Ceiling Mechanical Exhaust System

DOI

10.2991/esm-16.2016.61How to use a DOI?

Keywords

FDS, smoke exhaust opening, smoke exhaust rate, placement direction, curve fitting

Abstract

The numerical mode was constructed on the basis of a 7m-length with 1/10th scale model of subway platform channel. Firstly, the temperature and thickness of smoke layer under the smoke exhaust opening of different placement direction are simulated by using numerical simulation software. In this paper, the regulation of changeable temperature and thickness of smoke layer under the smoke exhaust opening is studied by changing the smoke exhaust rate.Then the Origin was used to fit the smoke layer thickness data obtained by numerical simulation. The model used the same fire heat release rate and the smoke exhaust opening size. The results show that the smoke exhaust rate of the smoke exhaust openings which are horizontally placed is larger than that of the smoke exhaust openings which are placed longitudinally. And the model for estimating the smoke layer thickness in the horizontal direction of smoke exhaust openings is y=y0+Ae^{R0X}. The model for estimating the smoke layer thickness in the longitudinal direction of the smoke exhaust openings is y=e^{a+bx+cx^2}.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yu Li
AU  - Shuang Wang
PY  - 2016/08
DA  - 2016/08
TI  - Effect of Smoke Exhaust Openings Placement Direction of Tunnel Ceiling Mechanical Exhaust System
BT  - Proceedings of the 2016 International Conference on Engineering Science and Management
PB  - Atlantis Press
SP  - 263
EP  - 267
SN  - 2352-5401
UR  - https://doi.org/10.2991/esm-16.2016.61
DO  - 10.2991/esm-16.2016.61
ID  - Li2016/08
ER  -