- Author
-
Bos, W. G.
|
Elsen, V. D.
|
Hoogendoorn, C. J.
|
Test, F. L.
- Title
- Numerical Study of Stratification of a Smoke Layer in a Corridor.
- Coporate
- Delft University of Technology, Netherlands
Rhode Island Univ., Kingston
- Journal
-
Combustion Science and Technology,
Vol. 38,
No. 5/6,
227-243,
1984
- Keywords
-
numerical analysis
|
corridors
|
stratified flow
- Abstract
- This paper presents a numerical study of the stratified flow situation that exits in a corridor in which hot exhaust gases from a fire enter at the top of one end cool air feeding the fire enters at the low side of the other end. It is seen that a temperature difference of 40 to 80 deg. C will cause the turbulence to disappear in the separation region. The gradient Richardson number gives the best physical insight into the flow and the critical value is about 0.5 for Reynolds numbers of 3000. The study shows that mathematical modelling of the flow of smoke layers in corridors and shopping malls can give reliable results on stratifications of the smoke layer.