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Underventilerad brand

Holmstedt, Göran LU and Grahn, Erik (2004) In LUTVDG/TVBB--3131--SE 3131.
Abstract
Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE. This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published

earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” by Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and is published in the proceedings of the conference.

In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well... (More)
Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE. This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published

earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” by Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and is published in the proceedings of the conference.

In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well ventilated fire) up to 1.8. At higher equivalence ratios the fire got unstable with violent fluctuations and flames now and then emerging out of the room. The following quantities were measured as a function of time in the experiments:

Inside the room; Gas temperatures at eight levels (vertical array) in the corner of the room; Surface

temperatures at six positions (three on the walls and three on the ceiling); Weight of the liquid fuel. In

the doorway; Gas temperatures at seven levels (vertical array) in the centre of the doorway; Gas concentrations in the doorway (CO, CO2,) Global equivalence ratio in the doorway (Phi-meter). In the exhaust duct; Gas concentration(CO, CO2, O2, and HC); Light attenuation due to smoke; Pressure drop from a bi-directional probe mounted in the centre of the duct; Gas temperature in the centre of the

duct.

The following quantities has been derived from the measurement: Mass loss rate of fuel; Mass flow in

the exhaust duct; Global equivalence ratio; Rate of heat release; Yields of CO, CO2, HC and soot at different equivalence ratios up to 1.8.

The report includes three appendix, Appendix A (calibration procedures) Appendix B (derived

variables as a function of time) and Appendix C 1-2 (raw data files of the experiments). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Book/Report
publication status
published
subject
keywords
nderventilation, fire, underventilerad brand
in
LUTVDG/TVBB--3131--SE
volume
3131
pages
30 pages
publisher
Fire Safety Engineering and Systems Safety
ISSN
1402-3504
language
Swedish
LU publication?
yes
id
34dcf6ef-66ee-492e-993f-781556f1a09f (old id 605345)
date added to LUP
2007-11-29 14:26:54
date last changed
2016-04-16 04:40:02
@techreport{34dcf6ef-66ee-492e-993f-781556f1a09f,
  abstract     = {Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE. This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published<br/><br>
earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” by Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and is published in the proceedings of the conference.<br/><br>
In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well ventilated fire) up to 1.8. At higher equivalence ratios the fire got unstable with violent fluctuations and flames now and then emerging out of the room. The following quantities were measured as a function of time in the experiments:<br/><br>
Inside the room; Gas temperatures at eight levels (vertical array) in the corner of the room; Surface<br/><br>
temperatures at six positions (three on the walls and three on the ceiling); Weight of the liquid fuel. In<br/><br>
the doorway; Gas temperatures at seven levels (vertical array) in the centre of the doorway; Gas concentrations in the doorway (CO, CO2,) Global equivalence ratio in the doorway (Phi-meter). In the exhaust duct; Gas concentration(CO, CO2, O2, and HC); Light attenuation due to smoke; Pressure drop from a bi-directional probe mounted in the centre of the duct; Gas temperature in the centre of the<br/><br>
duct.<br/><br>
The following quantities has been derived from the measurement: Mass loss rate of fuel; Mass flow in<br/><br>
the exhaust duct; Global equivalence ratio; Rate of heat release; Yields of CO, CO2, HC and soot at different equivalence ratios up to 1.8.<br/><br>
The report includes three appendix, Appendix A (calibration procedures) Appendix B (derived<br/><br>
variables as a function of time) and Appendix C 1-2 (raw data files of the experiments).},
  author       = {Holmstedt, Göran and Grahn, Erik},
  institution  = {Fire Safety Engineering and Systems Safety},
  issn         = {1402-3504},
  keyword      = {nderventilation,fire,underventilerad brand},
  language     = {swe},
  pages        = {30},
  series       = {LUTVDG/TVBB--3131--SE},
  title        = {Underventilerad brand},
  volume       = {3131},
  year         = {2004},
}