Numerical Simulation of Droplet Formation of Liquid Jet

2002 ◽  
Vol 2002.1 (0) ◽  
pp. 11-12
Author(s):  
Tameo NAKANISHI ◽  
Masami NAKANO ◽  
Takahiro KOBAYASHI
2005 ◽  
Vol 15 (5) ◽  
pp. 469-488 ◽  
Author(s):  
Chul Jin Choi ◽  
Sang Yong Lee

1999 ◽  
Vol 9 (4) ◽  
pp. 331-342 ◽  
Author(s):  
Michael P. Moses ◽  
Steven H. Collicott ◽  
Stephen D. Heister

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Naohisa Takagaki ◽  
Toru Kitaguchi ◽  
Masashi Iwayama ◽  
Atsushi Shinoda ◽  
Hiroshige Kumamaru ◽  
...  

AbstractThe high-speed liquid-jet velocity achieved using an injector strongly depends on the piston motion, physical property of the liquid, and container shape of the injector. Herein, we investigate the liquid ejection mechanism and a technique for estimating the ejection velocity of a high-speed liquid jet using a pyro jet injector (PJI). We apply a two-dimensional numerical simulation with an axisymmetric approximation using the commercial software ANSYS/FLUENT. To gather the input data applied during the numerical simulation, the piston motion is captured with a high-speed CMOS camera, and the velocity of the piston is measured using motion tracking software. To reproduce the piston motion during the numerical simulation, the boundary-fitted coordinates and a moving boundary method are employed. In addition, we propose a fluid dynamic model (FDM) for estimating the high-speed liquid-jet ejection velocity based on the piston velocity. Using the FDM, we consider the liquid density variation but neglect the effects of the liquid viscosity on the liquid ejection. Our results indicate that the liquid-jet ejection velocity estimated by the FDM corresponds to that predicted by ANSYS/FLUENT for several different ignition-powder weights. This clearly shows that a high-speed liquid-jet ejection velocity can be estimated using the presented FDM when considering the variation in liquid density but neglecting the liquid viscosity. In addition, some characteristics of the presented PJI are observed, namely, (1) a very rapid piston displacement within 0.1 ms after a powder explosion, (2) piston vibration only when a large amount of powder is used, and (3) a pulse jet flow with a temporal pulse width of 0.1 ms.


1999 ◽  
Vol 65 (631) ◽  
pp. 981-987 ◽  
Author(s):  
Takao INAMURA ◽  
Takehito TSUTAGAWA ◽  
Seong Jin CHO ◽  
Goro MASUYA

2020 ◽  
Vol 59 (05) ◽  
pp. 1
Author(s):  
Xuechu Zhao ◽  
Liran Ma ◽  
Yu Zhang ◽  
Xuefeng Xu ◽  
Jianbin Luo

2019 ◽  
Vol 2019 (0) ◽  
pp. OS2-23
Author(s):  
Tameo NAKANISHI ◽  
Kanta KOSAKA ◽  
Junichi SAITOU ◽  
Takao MISAWA ◽  
Yoshiyuki WATANABE

2014 ◽  
Vol 2014 (0) ◽  
pp. _G0210103--_G0210103-
Author(s):  
Toshikatsu WASHIO ◽  
Takashi KATO ◽  
Atsuhiro NAKAGAWA ◽  
Kinichi OGAWA ◽  
Teiji TOMINAGA ◽  
...  

2020 ◽  
Vol 2020.69 (0) ◽  
pp. 510
Author(s):  
Hiroaki SUGIURA ◽  
Koichi TSUJIMOTO ◽  
Toshihiko SHAKOUCHI ◽  
Toshitake ANDO ◽  
Mamoru TAKAHASHI

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