- Author
- Joshi, A. A. | Pagni, P. J.
- Title
- Users' Guide to BREAK, The Berkeley Algorithm for Cracking Window Glass in a Compartment Fire.
- Coporate
- California Univ., Berkeley
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Distribution
- Available from National Technical Information Service
- Contract
- NIST-GRANT-60NANB80848
- Keywords
- computer models | fire models | glass | mathematical models | radiation | thermal stresses | vents | thermal conductivity | thermal diffusivity
- Identifiers
- BREAK
- Abstract
- This is an instructional manual for the computer program BREAK, the Berkeley Alogorithm for Breaking Window Glass in a Compartment Fire. The thermal response of window glass in a window exposed to a compartment fire and its breaking time are calculated. The glass thermal conductivity, thermal diffusivity, absorption length, breaking stress, Young's modulus, coefficient of linear thermal expansion and emissivity, the histories of the flame radiation from the fire, hot layer temperature, ambient temperature, heat transfer coefficients and emissivities are all required as input. The output consists of the evolution of the glass temperature field and the breaking time. This manual contains a summary of the mathematical model, a table of thermophysical and mechanical data, some examples and advice on using the program.