A comparison of gas velocity measurements in a full-scale enclosure fire |
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Authors: | Rodney A. Bryant |
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Affiliation: | Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA |
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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. |
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Keywords: | Flow measurement Fire-induced flow Particle image velocimetry Bi-directional probe |
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