- Author
- Gore, J. P. | Klassen, M. E.
- Title
- Study of Structure and Radiation Properties of Pool Fires. Annual Report. July 1, 1990-August 30, 1991.
- Coporate
- Maryland Univ., College Park
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- Annual Report, 1991, 31 p.
- Contract
- NIST-GRANT-60NANB09D0944
- Keywords
- pool fires | tolune | soot | radiative heat transfer | temperature | absorption | emissions
- Identifiers
- radiative heat feedback; soot volume fraction; turbulent fluctuations; cold soot; turbulence radiation interactions
- Abstract
- Measurements of in situ radiative feedback, temperatures based on emission and soot volume fractions based on absorption and emission in a variety of pool fires were completed. The present report focusses on the results from 30 cm toluene fired pool fires as an example. The effects of turbulent fluctuations on the radiative heat feedback are treated using the transient soot volume fraction and temperature data. The results show large fluctuations in soot volume fractions and temperatures in all regions of the 30 cm pool fires. A layer of cold soot is found near the surface of the fire. The present treatment of radiative heat transfer accounts for the blockage of energy by the cold soot particles. The results also show the presence of large quantities of relatively cold soot in the fires. Treatment of turbulence radiation interactions using the present method was adequate for the calculation of directional and hemispherical heat feedback to the pool surface.