Abstract
Experimental measurements and numerical simulations of a high-speed water spray are presented. The numerical model is based on a stochastic separated flow technique that includes submodels for droplet dynamics, heat and mass transfer, and droplet-droplet collisions. Because the spray characteristics near the nozzle are difficult to ascertain, a new method for initialization of particle diameter size is developed that assumes a Rosin-Rammler distribution for droplet size, which correctly reproduces experimentally measured Sauter and arithmetic mean diameters. By relating the particle initialization to lower moments of the droplet statistics, it is possible to take advantage of measurements without substantial penalties associated with the greater experimental uncertainty of individual droplet measurements. Overall, very good agreement is observed in the comparisons of experimental measurements to computational predictions for the streamwise development of mean drop size and velocity. In addition, the importance of modeling droplet-droplet collisions is highlighted with comparison of selected droplet-droplet collision models.
| Original language | English |
|---|---|
| Pages (from-to) | 1369-1388 |
| Number of pages | 20 |
| Journal | International Journal of Multiphase Flow |
| Volume | 30 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2004 Nov 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Mechanical Engineering
Cite this
Numerical modeling and experimental measurements of a high speed solid-cone water spray for use in fire suppression applications. / Yoon, Suk Goo; Hewson, J. C.; Desjardin, P. E.; Glaze, D. J.; Black, A. R.; Skaggs, R. R.
In: International Journal of Multiphase Flow, Vol. 30, No. 11, 01.11.2004, p. 1369-1388.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Numerical modeling and experimental measurements of a high speed solid-cone water spray for use in fire suppression applications
AU - Yoon, Suk Goo
AU - Hewson, J. C.
AU - Desjardin, P. E.
AU - Glaze, D. J.
AU - Black, A. R.
AU - Skaggs, R. R.
PY - 2004/11/1
Y1 - 2004/11/1
N2 - Experimental measurements and numerical simulations of a high-speed water spray are presented. The numerical model is based on a stochastic separated flow technique that includes submodels for droplet dynamics, heat and mass transfer, and droplet-droplet collisions. Because the spray characteristics near the nozzle are difficult to ascertain, a new method for initialization of particle diameter size is developed that assumes a Rosin-Rammler distribution for droplet size, which correctly reproduces experimentally measured Sauter and arithmetic mean diameters. By relating the particle initialization to lower moments of the droplet statistics, it is possible to take advantage of measurements without substantial penalties associated with the greater experimental uncertainty of individual droplet measurements. Overall, very good agreement is observed in the comparisons of experimental measurements to computational predictions for the streamwise development of mean drop size and velocity. In addition, the importance of modeling droplet-droplet collisions is highlighted with comparison of selected droplet-droplet collision models.
AB - Experimental measurements and numerical simulations of a high-speed water spray are presented. The numerical model is based on a stochastic separated flow technique that includes submodels for droplet dynamics, heat and mass transfer, and droplet-droplet collisions. Because the spray characteristics near the nozzle are difficult to ascertain, a new method for initialization of particle diameter size is developed that assumes a Rosin-Rammler distribution for droplet size, which correctly reproduces experimentally measured Sauter and arithmetic mean diameters. By relating the particle initialization to lower moments of the droplet statistics, it is possible to take advantage of measurements without substantial penalties associated with the greater experimental uncertainty of individual droplet measurements. Overall, very good agreement is observed in the comparisons of experimental measurements to computational predictions for the streamwise development of mean drop size and velocity. In addition, the importance of modeling droplet-droplet collisions is highlighted with comparison of selected droplet-droplet collision models.
UR - http://www.scopus.com/inward/record.url?scp=8844274911&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=8844274911&partnerID=8YFLogxK
U2 - 10.1016/j.ijmultiphaseflow.2004.07.006
DO - 10.1016/j.ijmultiphaseflow.2004.07.006
M3 - Article
VL - 30
SP - 1369
EP - 1388
JO - International Journal of Multiphase Flow
JF - International Journal of Multiphase Flow
SN - 0301-9322
IS - 11
ER -