著者

渡邉 大貴 藤本 修平 緒方 正幸 熊谷 一郎

出版者

一般社団法人日本機械学会

雑誌

年次大会 : Mechanical Engineering Congress, Japan

巻号頁・発行日

vol.2015, pp."S0510104-1"-"S0510104-5", 2015-09-13

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Laboratory experiments on the flow visualization of the airless sprayer were conducted using shear thinning fluids (xanthan gum solutions) in order to improve the efficiency and the quality in the painting process for the ship hull. The behavior of liquid film instability and the droplet formation were strongly affected by the fluid rheology (concentration of xanthan gum solutions) and the spray pressure. In the atomization of 2.0 wt% xanthan gum solution, which is similar to the real paint in rheological property, the behavior of the spinnability was observed. We quantitatively examined the spatio-temporal variation of the liquid film collapsing, and extracted the dominant frequency components of the droplet formation by DFT analysis.