Development of quantitative evaluation method for droplet behavior with high speed rotary bell-cup atomizer

Kotaro Yasumura; Yasuhiro Saito; Masakazu Shoji; Yohsuke Matsushita; Hideyuki Aoki; Takatoshi Miura; Shin Ogasawara; Masatoshi Daikoku; Minori Shirota; Takao Inamura

doi:10.1252/kakoronbunshu.37.296

Development of quantitative evaluation method for droplet behavior with high speed rotary bell-cup atomizer

Kotaro Yasumura, Yasuhiro Saito, Masakazu Shoji, Yohsuke Matsushita, Hideyuki Aoki, Takatoshi Miura, Shin Ogasawara, Masatoshi Daikoku, Minori Shirota, Takao Inamura

ENG - Chemical Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Simulation of the spray flow around a high-speed rotary bell-cup was carried out in order to determine the dominating factor in the decrease of transfer efficiency (TE) and to reveal the effect of shaping air and electric voltage on droplet behavior. Methods were proposed for quantitative evaluation of the factor decreasing TE and the trajectory angle, defined as the slope of the droplets trajectory to the x-axis. As a result, it was shown that the dominating factor in the decrease of TE is droplets that travel with the air flow around the target. Calculated results showed that the shaping air is effective to control small (<10 μm) or large (>40 μm) droplets, and the electric voltage is effective to control medium-sized droplets (10-40 mm).

Original language	English
Pages (from-to)	296-304
Number of pages	9
Journal	Kagaku Kogaku Ronbunshu
Volume	37
Issue number	4
DOIs	https://doi.org/10.1252/kakoronbunshu.37.296
Publication status	Published - 2011

Keywords

Droplet behavior
Numerical analysis
Spray coating
Transfer efficiency

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10.1252/kakoronbunshu.37.296

Cite this

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title = "Development of quantitative evaluation method for droplet behavior with high speed rotary bell-cup atomizer",

abstract = "Simulation of the spray flow around a high-speed rotary bell-cup was carried out in order to determine the dominating factor in the decrease of transfer efficiency (TE) and to reveal the effect of shaping air and electric voltage on droplet behavior. Methods were proposed for quantitative evaluation of the factor decreasing TE and the trajectory angle, defined as the slope of the droplets trajectory to the x-axis. As a result, it was shown that the dominating factor in the decrease of TE is droplets that travel with the air flow around the target. Calculated results showed that the shaping air is effective to control small (<10 μm) or large (>40 μm) droplets, and the electric voltage is effective to control medium-sized droplets (10-40 mm).",

keywords = "Droplet behavior, Numerical analysis, Spray coating, Transfer efficiency",

author = "Kotaro Yasumura and Yasuhiro Saito and Masakazu Shoji and Yohsuke Matsushita and Hideyuki Aoki and Takatoshi Miura and Shin Ogasawara and Masatoshi Daikoku and Minori Shirota and Takao Inamura",

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doi = "10.1252/kakoronbunshu.37.296",

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T1 - Development of quantitative evaluation method for droplet behavior with high speed rotary bell-cup atomizer

AU - Yasumura, Kotaro

AU - Saito, Yasuhiro

AU - Shoji, Masakazu

AU - Matsushita, Yohsuke

AU - Aoki, Hideyuki

AU - Miura, Takatoshi

AU - Ogasawara, Shin

AU - Daikoku, Masatoshi

AU - Shirota, Minori

AU - Inamura, Takao

PY - 2011

Y1 - 2011

N2 - Simulation of the spray flow around a high-speed rotary bell-cup was carried out in order to determine the dominating factor in the decrease of transfer efficiency (TE) and to reveal the effect of shaping air and electric voltage on droplet behavior. Methods were proposed for quantitative evaluation of the factor decreasing TE and the trajectory angle, defined as the slope of the droplets trajectory to the x-axis. As a result, it was shown that the dominating factor in the decrease of TE is droplets that travel with the air flow around the target. Calculated results showed that the shaping air is effective to control small (<10 μm) or large (>40 μm) droplets, and the electric voltage is effective to control medium-sized droplets (10-40 mm).

AB - Simulation of the spray flow around a high-speed rotary bell-cup was carried out in order to determine the dominating factor in the decrease of transfer efficiency (TE) and to reveal the effect of shaping air and electric voltage on droplet behavior. Methods were proposed for quantitative evaluation of the factor decreasing TE and the trajectory angle, defined as the slope of the droplets trajectory to the x-axis. As a result, it was shown that the dominating factor in the decrease of TE is droplets that travel with the air flow around the target. Calculated results showed that the shaping air is effective to control small (<10 μm) or large (>40 μm) droplets, and the electric voltage is effective to control medium-sized droplets (10-40 mm).

KW - Droplet behavior

KW - Numerical analysis

KW - Spray coating

KW - Transfer efficiency

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Development of quantitative evaluation method for droplet behavior with high speed rotary bell-cup atomizer

Abstract

Keywords

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