Generation of a supersonic micro-jet and its medical and industrial applications
Research members： Dr. Yoshiyuki Tagawa
Research fields： Mechanical engineering
Departments： Institute of Engineering
Keywords： Multi-phase flow, Micro-jet, Bubbly flow, Medical application, Ink-jet printer
Web site：
Summary
We develop a novel method for generating supersonic micro-jets. The jet has highly-focused shape and its velocity is over 850 m/s. As a micro-flow, this high-velocity makes the jet unique. We reveal its generation mechanism. The jet has a potential to be utilized to medical and industrial applications such as needle-free injection devices and ink-jet printing.
Reference articles and patents
Tagawa, Y., Yamamoto, S., Hayasaka, K., and Kameda, M.,
On pressure impulse of a laser-induced underwater shock wave
Journal of Fluid Mechanics, 808, pp. 5-18 (2016). Open Access
Kiyama, A., Tagawa, Y., Ando, K., and Kameda, M.,
Effects of water hammer and cavitation on jet formation in a test tube
Journal of Fluid Mechanics, 787, pp. 224-236 (2016). Open Access
DOI: http://dx.doi.org/10.1017/jfm.2015.690
Hayasaka, K., Tagawa,Y., Liu, T., and Kameda, M.,
Optical-flow-based background-oriented schlieren technique for measuring a laser-induced underwater shock wave
Experiments in Fluids, (2016). Accepted
河本仙之介，早坂啓祐，野口悠斗，田川義之，
レーザー誘起マイクロジェットの体積
日本機械学会論文集, 82, No. 838, pp. 16-00094, (2016).
DOI: http://doi.org/10.1299/transjsme.16-00094
Yamamoto, S., Tagawa, Y., and Kameda, M.,
Application of background-oriented schlieren (BOS) technique to a laser-induced underwater shock wave
Experiments in Fluids, 56, No.5, 93 (2015).
斎藤雅史，田川義之，（Saito, M., and Tagawa, Y.,）
移動壁面上を浮遊する液滴に働く揚力（Lift force acting on a levitating drop over a moving wall）
日本機械学会論文集 (Transactions of the JSME (in Japanese)), 81, No.825, (2015) (Accepted).
木山景仁，野口悠斗，田川義之，（Kiyama, A., Noguchi, Y., and Tagawa, Y.）
撃力による液体ジェットの生成（The generation of a liquid jet induced by a pressure impulse）
日本機械学会論文集 (Transactions of the JSME (in Japanese)), 80, No.814, FE0151 (2014).
Tagawa, Y., Takagi, S., and Matsumoto, Y.,
Surfactant effect on path instability of a rising bubble
Journal of Fluid Mechanics, 738, pp. 124-142 (2014).
Tagawa, Y., Oudalov, N., Ghalbzouri, A. El, Sun, C., and Lohse, D.,
Needle-free injection into skin and soft matter with highly focused microjets
Lab on a Chip, 13, pp. 1357-1363. (2013).
Picked up by Physics Today Blog and MIT Technology review
Tagawa, Y., Roghair, I., Martin van Sint Annaland, Kuipers, H., Sun, C., and Lohse D.
The clustering morphology of freely rising deformable bubbles
Journal of Fluid Mechanics, 721, R2-1-13. (2013).
Lhuissier H., Tagawa, Y., Tran, T., and Sun, C.
Levitation of a drop over a moving surface
Journal of Fluid Mechanics, 733, R4-1-14. (2013).
Peters, I. R., Tagawa, Y., Oudalov, N., van der Meer, D., Sun, C., Prosperetti, A., and Lohse, D.
Highly focused supersonic microjets: numerical simulations
Journal of Fluid Mechanics, 719, pp. 587-605. (2013).
Tagawa, Y., van der Molen, J., van Wijngaarden, L., and Sun, C.
Wall force on a sphere in a rotating liquid filled cylinder
Physics of Fluids, 25, 063302. (2013).
Tagawa, Y., Martinez-Mercado, J., Prakash, V.N., Calzavarini, E., Sun, C., and Lohse, D.
Three-dimensional Lagrangian Voronoi analysis for clustering of particles and bubbles in turbulence
Journal of Fluid Mechanics, 693, pp.201-215. (2012).
Tagawa, Y., Oudalov, N., Visser, C.W., Peters, I., van der Meer, D., Sun, C., Prosperetti, A., and Lohse, D.
Highly focused supersonic microjet
Physical Review X, 2, 031002. (2012).
Levitating drops
When we deposit a drop over a moving wall, the drop does not touch the wall and levitates continuously. We investigate its levitation mechanism experimentally.
Contact
University Research Administration Center(URAC),
Tokyo University of Agriculture andTechnology
urac[at]ml.tuat.ac.jp
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