Advanced

Modeling of room fire growth - Combustible lining materials

Magnusson, Sven Erik LU and Sundström, Björn (1984) In LUTVDG/TVBB--3019--SE 3019.
Abstract
A computational procedure has been developed to correlate the room fire test process and results from the proposed IS0 small scale laboratory tests. The analysis assumes that the full scale room fire test follows the proposed ASTM method, implying that the lining material covers ceiling and walls. The procedure requires that the heat release measurement response time of the test room is evaluated and for a specific material linked to results from the ignitability test. From the same

test, a value of koc must be calculated. From a small scale rate of heat release test are evaluated specific characteristics describing the RHR-curve. The derived test room and material characteristics are used as input data to an uncomplicated... (More)
A computational procedure has been developed to correlate the room fire test process and results from the proposed IS0 small scale laboratory tests. The analysis assumes that the full scale room fire test follows the proposed ASTM method, implying that the lining material covers ceiling and walls. The procedure requires that the heat release measurement response time of the test room is evaluated and for a specific material linked to results from the ignitability test. From the same

test, a value of koc must be calculated. From a small scale rate of heat release test are evaluated specific characteristics describing the RHR-curve. The derived test room and material characteristics are used as input data to an uncomplicated mathematical expression, essentially describing the full scale test fire process as a concurrent flame spread phenomenon. Undetermined parametors in the model have boon derived using regression analysis and results from seven full scale room tests. In these the tested materials were of such thickness that no burning through occurred. The quantitative accuracy was thought acceptable but further experimental confirmation

and sensitivity studies are needed to assess the inherent variability. Qualitatively the procedure predicted the same relative ranking of materials as the room test. For thin surface finish materials on a non-combustible base it was possible to derive a radically simple expression to be used as indication of the risk of flashover. Again, the final usefulness can only be evaluated on the basis of further experimental evidence. In summary, it is thought that a first step has been taken in the efforts to use results from small scale tests to rationally predict full scale fire growth (for one specified scenario) and rank materials. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Book/Report
publication status
published
subject
in
LUTVDG/TVBB--3019--SE
volume
3019
pages
66 pages
publisher
Division of Building Fire Safety and Technology, Lund Institute of Technology
language
English
LU publication?
yes
id
5fdafb1e-559d-4c94-b87b-6655d9133aa7 (old id 1270240)
date added to LUP
2008-11-24 12:27:23
date last changed
2016-04-16 07:13:16
@techreport{5fdafb1e-559d-4c94-b87b-6655d9133aa7,
  abstract     = {A computational procedure has been developed to correlate the room fire test process and results from the proposed IS0 small scale laboratory tests. The analysis assumes that the full scale room fire test follows the proposed ASTM method, implying that the lining material covers ceiling and walls. The procedure requires that the heat release measurement response time of the test room is evaluated and for a specific material linked to results from the ignitability test. From the same<br/><br>
test, a value of koc must be calculated. From a small scale rate of heat release test are evaluated specific characteristics describing the RHR-curve. The derived test room and material characteristics are used as input data to an uncomplicated mathematical expression, essentially describing the full scale test fire process as a concurrent flame spread phenomenon. Undetermined parametors in the model have boon derived using regression analysis and results from seven full scale room tests. In these the tested materials were of such thickness that no burning through occurred. The quantitative accuracy was thought acceptable but further experimental confirmation<br/><br>
and sensitivity studies are needed to assess the inherent variability. Qualitatively the procedure predicted the same relative ranking of materials as the room test. For thin surface finish materials on a non-combustible base it was possible to derive a radically simple expression to be used as indication of the risk of flashover. Again, the final usefulness can only be evaluated on the basis of further experimental evidence. In summary, it is thought that a first step has been taken in the efforts to use results from small scale tests to rationally predict full scale fire growth (for one specified scenario) and rank materials.},
  author       = {Magnusson, Sven Erik and Sundström, Björn},
  institution  = {Division of Building Fire Safety and Technology, Lund Institute of Technology},
  language     = {eng},
  pages        = {66},
  series       = {LUTVDG/TVBB--3019--SE},
  title        = {Modeling of room fire growth - Combustible lining materials},
  volume       = {3019},
  year         = {1984},
}