- Author
-
Delichatsios, M. A.
|
Alpert, R. L.
|
Orloff, L.
|
Mathews, M. K.
- Title
- Computer Modeling of Aircraft Cabin Fire Phenomena.
- Coporate
- Factory Mutual Research Corp., Norwood, MA
- Sponsor
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBS GCR 82-404,
October 1982,
74 p.
- Distribution
- Available from National Technical Information Service
- Contract
- NB81NADA2007
- Keywords
-
aircraft compartments
|
aircraft fires
|
ceilings
|
compartment fires
|
computer programs
|
fire growth
|
fire models
|
heat flux
|
mathematical models
|
walls
- Abstract
- A two-layer integral model is presented for the calculation of turbulent wall flows on a vertical wall including a burning wall. The turbulent flow is divided into inner and outer turbulent regimes. These regimes are matched on a dividing streamline after appropriate wall laws for the turbulent flow have been developed. Wall laws, which depend on the specific boundary conditions, are proposed for an adiabatic wall plume, an adiabatic wall plume with addition of an inert material at the wall and a burning wall. The present methodology could be used also to develop wall flow laws for a constant temperature or constant heat flux wall and the overfire region above a burning wall. Numerical results are presented for an adiabatic wall flow with constant buoyancy flux and a burning wall without appreciable radiation. The common constants in both cases are the same. The agreement with existing experimental results in both cases is excellent. Additional detailed experiments on turbulent wall fires are planned to verify all the predictions of the present model. The turbulent wall model for a burning wall can readily be extended to include radiation.