- Author
-
Jaluria, Y.
- Title
- Buoyancy-Induced Wall Flow Due to Fire in a Room.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBSIR 84-2841,
May 1984,
96 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
density interface
|
enclosure fires
|
plume penetration
|
stratified media
|
wall flows
|
zone-modeling
- Abstract
- A study of buoyancy-driven flow generated adjacent to the vertical walls of a room due to fire in the room has been carried out. The boundary layer flow that arises over the vertical walls due to the resulting difference between the wall and gas temperatures was analyzed, employing the integral analysis method. The flow rate, momentum and convected energy in the downward flow that arises in the heated upper layer and those in the upward flow that is generated in the cooler lower layer were determined. The separation point and the region near it where the flow starts separating from the wall are studied. Though more detailed and more accurate computations are included, an approximate method for evaluating the wall effects for a two-layer model and for an experimental study is outlined.