- Author
- McCaffrey, B. J. | Deal, S.
- Title
- Data Summary on the Effect of Chimney Type Enclosures Upon the Axisymmetric Plume Temperatures of Small Heptane Pool Fires.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- Data Summary, [date unknown], 430 p.
- Keywords
- chimneys | enclosures | plumes | temperature | pool fires | heptanes | data analysis
- Identifiers
- data file explanation; pool fire data files; load cell calibration files; data transduction program
- Abstract
- This data summary constitutes a research pregress report for Grant from the Center for Fire Research, National Institute of Standards and Technology. Analysis of this data will not be completed under this grant due to illness of the principal investigator Professor Bernard McCaffrey. Professor McCaffrey believes that all carefully measured data is valuable. The data from this investigation of the effects of chimney type enclosures upon the axisymmetric plume temperatures of small heptane pool fires is recorded here for others to use in furthering their own research. This work will quantify the effects upon liquid pool fire plume temperatures as they are influenced by the proximity of a vertical shaft of walls. Since this top of these walls is open, in essence a "stack" or "chimney" effect is being studied. A series of square walled enclosures varying from a relatively small cross sectional area to a relatively large cross sectional area were investigated. The effect of the relatively small cross sectional area walls was to increase the flame height and burning rate of the fuel. The walls with the relatively large cross sectional area had no discernable impact upon the fire, free burning conditions were reproduced. A correlation will be developed from this investigation which relates the dependence of the flame height to the "confined wall enclosure" effect. This effect will include nondimensional groups to include the hydraulic radius created by the wall's flue and the diameter of the fuel dish. Ultimately, this correlation can be used in computer models and in engineering practice to estimate the enhanced burning phenomena within tightly confining burning geometries.