- Author
-
Isaksson, S.
|
Persson, B.
|
Tuovinen, H.
- Title
- CFD-Simulations of Fire Detection in a Room With a Perforated Suspended Ceiling.
- Coporate
- Swedish National Testing and Research Institute, Boras, Sweden
- Report
-
SP Report 1997:43; BRANDFORSK Project 628-951,
1997,
23 p.
- Distribution
- AVAILABLE FROM National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900. Website: http://www.ntis.gov
- Keywords
-
computational fluid dynamics
|
fire detection
|
room fires
|
simulation
|
ceilings
|
field models
|
detector location
|
smoke detection
|
smoke detectors
|
smoke density
|
detector response
- Abstract
- A series of room fire experiments carried out by DELTA Electronics Testing have been simulated employing Computational Fluid Dynamics (CFD). The test room had a perforated suspended ceiling. The degree of perforation was varied from 0 - 50%. three different degrees of perforation have been simulated, 10%, 15%, and 50%. the fire source, known as TF4 in the EN-54-9 standard, consisted of soft polyurethane foam. The amount of polyurethane foam was adjusted in the experiments in order to have a similar amount of smoke per volume as in the standard tests. the smoke density was not measured directly in the experiments, but was derived from a correlation with the MIC-signal. the smoke detectors were activated within a narrow interval of the MIC-signal.