- Author
-
McCaffrey, B. J.
|
Quintiere, J. G.
- Title
- Fire-Induced Corridor Flow in a Scale Model Study.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
Paper 4,
- Book or Conf
- Fire Research Station. Conseil International du Batiment (CIB) Symposium on the Control of Smoke Movement in Building Fires. Volume One. Papers. November 4-5, 1975,
Watford, UK,
33-47 p.,
1975
- Keywords
-
smoke control
|
smoke movement
|
building fires
|
corridors
|
air flow
|
corridor tests
|
scale models
|
velocity
|
temperature measurements
|
flow measurement
|
experiments
|
stratified flow
- Abstract
- The airflow induced within a corridor by a room fire was studied for a scale model configuration. The effect of corridor exit opening was determined for a fixed room door opening and temperature gradient. Velocity and temperature measurements were made. At the room doorway and corridor exit the thermally stratified flow would enter and leave with a sharp boundary between the counter current flows. However, within the corridor the flow was more complex, giving rise to a large recirculating zone traversing the corridor length and trapped between the hot ceiling jet and entering cold flow. Smoke tracer visualization techniques illuminated these complex flow patterns along with mixing caused by shedding vortexes. These flow results are quantitatively presented and their nature is discussed. The total mass flow rate induced into the corridor was measured and compared to theoretical results. At this time, the implications of these complex corridor flows in a scale model must be limited until they are verified in similar full-scale experiments and their nature is more thoroughly understood.