- Author
-
Kim, C. I.
|
Kulkarni, A. K.
- Title
- Generalized Correlation for Forward Heat Flux in Upward Flame Spread.
- Coporate
- Pennsylvania Univ., Philadelphia
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
Session B-1,
- Contract
- NIST-GRANT-60NANB8D0849
- Book or Conf
- Combustion Institute/Eastern States Section. Chemical and Physical Processes in Combustion. Fall Technical Meeting, 1990. December 3-5, 1990,
Orlando, FL,
52/1-4 p.,
1990
- Keywords
-
combustion
|
flame spread
|
heat flux
|
predictive models
|
experiments
|
critical temperature
- Abstract
- It is well-established that the flame spread process depends on how fast the unburnt fuel ahead of the pyrolysis front can be heated to a critical temperature (or a range of temperatures) that causes significant pyrolysis. Therefore, it is essential for upward flame spread model to account the forward heat flux accurately. There have been many attempts to address the forward heat flux in upward flame spread models, starting with Thomas and Lawson, who assumed a constant heat feedback to the unburnt fuel ahead of pyrolysis front. Others have assumed exponential or other forms of decaying functions. The work presented here attempts to put together the measured experimental data on the forward heat flux to correlate into a generalized correlation that can be easily applied to modeling of upward flame spread. The data covers several materials, and the correlation makes use of specially defined properties to account for the important characteristics of individual materials.