- Author
-
Daikoku, M.
|
Saito, K.
- Title
- Flame Spread Along the Vertical Corner Wall in Room Fire.
- Coporate
- Hachinohe Institute of Technology, Japan
Kentucky Univ., Lexington
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Contract
- NIST-GRANT-60NANB2D1295
- Book or Conf
- Scale Modeling 2nd International Symposium. Proceedings. University of Kentucky. June 23-27, 1997,
Lexington, KY,
47-58 p.,
1997
- Keywords
-
scale models
|
room fires
|
wall fires
|
flame spread
|
temperature
|
heat flux
|
flow visualization
|
flame spread test
- Abstract
- A study on upward flame spread along the vertical corner walls was conducted using a room corner model with one-tenth scale ratio to a NIST prototype. The test materials were particle board and PMMA with thickness varied up to 15 mm, and the main parameters were the heat release rate of the heat source and the burner stand-off distance from the vertical walls. Prior to the flame spread experiments, flow visualization with two different (smoke-trace and salt-water modeling) methods was conducted to observe the flow field with a heat source. The smoke trace method with one-half scale model well revealed the fire-induced flow, and the salt-water technique with one-twentieth scale model well reproduced the flow field. Temperature and heat flux profiles on the vertical corner walls were also obtained for the one-half scale model, the effect of the stand-off distance on the profiles was shown to be significant due to the fire-induced flow. The flame spread experiments were conducted under the experimental conditions corresponding to the temperature and the heat flux measurement, and the flow visualization. The result for both materials showed that the flame spread rate on the vertical corner walls was significantly large compared to that on a flat vertical wall, however, the spread rate along the vertical corner was confirmed to be extremely small due to the heat loss from the corner of backside wall.