- Author
- Bryant, R. A.
- Title
- Comparison of Gas Velocity Measurements in a Full-Scale Enclosure Fire.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Fire Safety Journal, Vol. 44, No. 5, 792-800, July 2009
- Keywords
- enclosures | gas velocity | velocity measurement | natural gas | probes | gas constants | thermocouples | heat release rate | experiments | doorways | floors | air flow
- Identifiers
- Particle Image Velocimetry (PIV); Stereoscopic Particle Image Velocimetry (SPIV); bi-directional impact-pressure probes; flow measurement; fire-induced flow
- Abstract
- Gas velocity measurements were conducted in the doorway of an enclosure containing a natural gas fire. Two independent measurement techniques, Stereoscopic Particle Image Velocimetry (SPIV) and bi-directional impact-pressure probes, were utilized for comparison - the first such comparison for a fire-induced flow in a full-scale structural fire. Gas velocities inferred from the bi-directional probe measurements were consistently greater than SPIV measurements in a region of the flow between the floor and the flow interface. The comparison revealed that a measurement bias exists in the bi-directional probe technique. Estimates of the relative magnitude of the bias were inferred from the results.