Seven experimental series with over 100 configurations using two structures reveal the impact of hose stream patterns and nozzle movements on air flow inside structures. (NIST photos)
The National Institute of Standards and Technology (NIST) Fire Research Division released the findings from their experiments on hose streams, nozzle movement and air flow inside a structure. In the paper, “Impact of Hose Streams on Air Flow Inside a Structure”, presented by Joseph M. Willi, Daniel Madrzykowski and Craig G. Weinschenck, the research had two objectives: Determine the amount of air movement induced by different hose streams and nozzle movements; Examine Royer’s nozzle movement theory on the direction of nozzle movement.