Characterizing Positive Pressure Ventilation Using Computational Fluid Dynamics.
Characterizing Positive Pressure Ventilation Using
Computational Fluid Dynamics.
Kerber, S. I.; Walton, W. D.
NISTIR 7065; 33 p. February 2003.
Sponsor:Federal Emergency Management Agency, Washington, DC
U.S. Fire Administration, Washington, DC
Available from:Orders Only) 800-553-6847;
computational fluid dynamics; ventilation; mapping;
velocity fields; experiments; uncertainty; air flow; air
Data from two different sets of full-scale experiments
are compared with simulations completed with
computational fluid dynamic model, the Fire Dynamic
Simulator (FDS). The full-scale experiments characterize
a Positive Pressure Ventilation (PPV) fan in an open
atmosphere and in a simple room geometry. The
measurements of both experiments compare favorably with
the Fire Dynamic Simulator results. With the correct
geometry, vent placement, and boundary location FDS
predicted velocities that were within 10 percent for the
open atmosphere and 20 percent for the simple room
geometry. FDS's visualization of the positive pressure
ventilation fan's flow pattern, and the flow out of the
window also correlated well with those measured