Improving Phase Doppler Volume Flux Measurements in Low Data Rate Applications.
Improving Phase Doppler Volume Flux Measurements in Low
Data Rate Applications.
Widmann, J. F.; Presser, C.; Leigh, S. D.
Measurement Science and Technology, Vol. 12, No. 1,
1180-1190, August 2001.
droplets; sprinklers; sprays; multiphase flow; phase
Doppler interferometry; phase Doppler particle analyzer;
volume flux measurements
Phase Doppler interferometry (PDI) measurements in low
number density sprays necessitate a compromise between
collecting a large number of samples for adequate
statistics and practical data acquisition times. This
paper investigates the effect of insufficient sample
statistics on the calculated probe area, and the
resultant uncertainty in the volume flux measurement.
Several methods of improving the probe area calculation
and volume flux measurement are investigated using
experimental data obtained from water sprays produced by
residential fire sprinklers. The corrections result in
statistically significant improvements in the volume