TY - JOUR
T1 - Measurement of droplet size distribution in core region of high-speed spray by micro-probe L2F
AU - Sakaguchi, Daisaku
AU - Le Amida, Oluwo
AU - Ueki, Hironobu
AU - Ishida, Masahiro
N1 - Funding Information:
This investigation was supported by a Grant-in-Aid for Scientific Research through grant number 16560151 from Japanese Society for the Promotion of Science.
PY - 2008/3
Y1 - 2008/3
N2 - In order to investigate the distribution of droplet sizes in the core region of diesel fuel spray, instantaneous measurement of droplet sizes was conducted by an advanced laser 2-focus velocimeter (L2F). The micro-scale probe of the L2F is made up of two foci and the distance between them is 36 μm. The tested nozzle had a 0.2 mm diameter single-hole. The measurements of injection pressure, needle lift, and crank angle were synchronized with the measurement by the L2F at the position 10 mm downstream from the nozzle exit. It is clearly shown that the droplet near the spray axis is larger than that in the off-axis region under the needle full lift condition and that the spatial distribution of droplet sizes varies temporally. It is found that the probability density distribution of droplet sizes in the spray core region can be fitted to the Nukiyama-Tanasawa distribution in most injection periods.
AB - In order to investigate the distribution of droplet sizes in the core region of diesel fuel spray, instantaneous measurement of droplet sizes was conducted by an advanced laser 2-focus velocimeter (L2F). The micro-scale probe of the L2F is made up of two foci and the distance between them is 36 μm. The tested nozzle had a 0.2 mm diameter single-hole. The measurements of injection pressure, needle lift, and crank angle were synchronized with the measurement by the L2F at the position 10 mm downstream from the nozzle exit. It is clearly shown that the droplet near the spray axis is larger than that in the off-axis region under the needle full lift condition and that the spatial distribution of droplet sizes varies temporally. It is found that the probability density distribution of droplet sizes in the spray core region can be fitted to the Nukiyama-Tanasawa distribution in most injection periods.
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U2 - 10.1007/s11630-008-0090-1
DO - 10.1007/s11630-008-0090-1
M3 - Article
AN - SCOPUS:40549135679
SN - 1003-2169
VL - 17
SP - 90
EP - 96
JO - Journal of Thermal Science
JF - Journal of Thermal Science
IS - 1
ER -