- Author
- Liu, V. K. | Lloyd, J. R.
- Title
- One Dimensional Radiation Model for Surfaces and Non-Homogeneous Gases and Soot.
- Coporate
- Notre Dame, Univ., IN
- Sponsor
- National Bureau of Standards, Gaithersburg, MD
- Report
- NBS GCR 78-151; TR-79002781, March 6, 1978, 96 p.
- Distribution
- Available from National Technical Information Service
- Contract
- GRANT-G79002
- Keywords
- fire models | heat transfer | room fires | smoke | soot | thermal radiation
- Abstract
- This report presents a detailed description of the one dimensional radiation model which is currently employed in the UNDSAFE code. The model includes surface, soot and gas radiation with adiabatic boundaries for the enclosure. Interactions between gas and soot radiation are accounted for as well as the effect of overlapping bands in the gaseous radiation. The soot radiation model does not consider scattering and the gas radiation model includes the 2.7 and 6.3 mu m bands for H2O and the 2.7 and 4.3 mu m bands for CO2. The overlap of the 2.7 mu m bands is accounted for. Samples of the results of calculations for three limiting cases including no radiation in the calculation, surface and heavy soot radiation only in the calculation, and surface and gaseous radiation only in the calculation are presented to demonstrate the model.