- Author
- Zukoski, E. E. | Kubota, T. | Cetegen, B.
- Title
- Entrainment in the Near Field of a Fire Plume. Final Report.
- Coporate
- California Inst. of Tech., Pasadena, CA
- Sponsor
- National Bureau of Standards, Gaithersburg, MD
- Report
- NBS GCR 81-346, November 1981, 66 p.
- Distribution
- Available from National Technical Information Service
- Contract
- GRANT-G89014
- Keywords
- diffusion flames | entrainment | fire models | fire plumes
- Abstract
- This report concerns entrainment measurements made in the near field of a fire plume. The flame geometry and entrainment rates of 10-80 kW methane diffusion flames heights based on high speed photographs are presented and correlations are developed for several characteristics of the flame geometry. The entrainment process in a fire plume was found to occur in three distinct modes: A laminar flame, in the zone close to the burner surface; a turbulent flame, at larger heights; and a turbulent plume, in the region above the visible flame. A simple model based on these three processes is proposed and compared with entrainment measurements.