November 2005

BFRL Monthly Highlights

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PAST Highlights

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Particle Image Velocimetry Used to Measure Buoyancy Induced Flow Through Doorway

Quantifying the ventilation available to an enclosure fire is an important step to understanding fire behavior. Accurate measurements of mass flow rate across an enclosure opening require a complete mapping of the velocity and density fields due to the three dimensional nature of vent flows. The staff of BFRL recently has completed experiments to demonstrate how a laser-based non-intrusive imaging technique, stereoscopic particle image velocimetry, can be successfully used to map the velocity field in the region of a doorway to an enclosure fire. A detailed description of the experiments and a discussion of the results are included in a report cited on the Web at http://fire.nist.gov/bfrlpubs/fire05/PDF/ f05044.pdf. Recommendations for conducting PIV measurements in large-scale flow systems such as fire experiments are presented.

CONTACT:
Rodney Bryant
rodney.bryant@nist.gov

 

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