TY - JOUR
T1 - Experimental characterisation of sprays resulting from impacts of liquid-containing projectiles
AU - Hostikka, Simo
AU - Silde, Ari
AU - Sikanen, Topi
AU - Vepsä, Ari
AU - Paajanen, Antti
AU - Honkanen, Markus
PY - 2015
Y1 - 2015
N2 - Modelling and analysing fires following aircraft impacts
requires information about the behaviour of liquid fuel.
In this study, we investigated sprays resulting from the
impacts of water-filled metal projectiles on a hard wall.
The weights of the projectiles were in the range of
38-110 kg, with 8.6-68 kg water, and the impact speeds
varied between 96 and 169 m/s. The overall spray
behaviour was observed with high-speed video cameras.
Ultra-high-speed cameras were used in backlight
configuration for measuring the droplet size and velocity
distributions. The results indicate that the liquid
leaves the impact position as a thin sheet of spray in a
direction perpendicular to the projectile velocity. The
initial spray speeds were 1.5-2.5 times the impact speed,
and the Sauter mean diameters were in the 147-344 ?m
range. This data can be used as boundary conditions in
CFD fire analyses, considering the two-phase fuel flow.
The overall spray observations, including the spray
deceleration rate, can be used for validating the model.
AB - Modelling and analysing fires following aircraft impacts
requires information about the behaviour of liquid fuel.
In this study, we investigated sprays resulting from the
impacts of water-filled metal projectiles on a hard wall.
The weights of the projectiles were in the range of
38-110 kg, with 8.6-68 kg water, and the impact speeds
varied between 96 and 169 m/s. The overall spray
behaviour was observed with high-speed video cameras.
Ultra-high-speed cameras were used in backlight
configuration for measuring the droplet size and velocity
distributions. The results indicate that the liquid
leaves the impact position as a thin sheet of spray in a
direction perpendicular to the projectile velocity. The
initial spray speeds were 1.5-2.5 times the impact speed,
and the Sauter mean diameters were in the 147-344 ?m
range. This data can be used as boundary conditions in
CFD fire analyses, considering the two-phase fuel flow.
The overall spray observations, including the spray
deceleration rate, can be used for validating the model.
U2 - 10.1016/j.nucengdes.2015.09.008
DO - 10.1016/j.nucengdes.2015.09.008
M3 - Article
SN - 0029-5493
VL - 295
SP - 388
EP - 402
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
ER -