Experimental study of the water jet induced by underwater electrical discharge in a narrow rectangular tube

Koita, Taketoshi; Zhu, Yujian; Sun, Mingyu

doi:10.1007/s00193-016-0654-z

Cited by 2 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Delrot et al demonstrated that this method can be applied to the inkjet printing system [5]. Other groups have reported the jet generating devices which utilize the interaction between the shock wave and the air-liquid interface [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effects of pressure impulse and peak pressure of a shockwave on microjet velocity in a microchannel

Hayasaka

Kiyama

Tagawa

2017

Microfluid Nanofluid

View full text Add to dashboard Cite

The development of needle-free injection systems utilizing high-speed microjets is of great importance to world healthcare. It is thus crucial to control the microjets, which is often induced by underwater shock waves. In this contribution from fluid-mechanics point of view, we experimentally investigate the effect of a shock wave on the velocity of a free surface (microjet) and underwater cavitation onset in a microchannel, focusing on the pressure impulse and peak pressure of the shock wave. The shock wave used had a non-spherically-symmetric peak pressure distribution and a spherically symmetric pressure impulse distribution [Tagawa et al., J. Fluid Mech., 2016, 808, 5-18]. First, we investigate the effect of the shock wave on the jet velocity by installing a narrow tube and a hydrophone in different configurations in a large water tank, and measuring the shock wave pressure and the jet velocity simultaneously. The results suggest that the jet velocity depends only on the pressure impulse of the shock wave. We then investigate the effect of the shock wave on the cavitation onset by taking measurements in an L-shaped microchannel. The results suggest that the probability of cavitation onset depends only on the peak pressure of the shock wave. In addition, the jet velocity varies according to the presence or absence of cavitation. The above findings provide new insights for advancing a control method for high-speed microjets.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of pressure impulse and peak pressure of a shockwave on microjet velocity in a microchannel

Hayasaka

Kiyama

Tagawa

2017

Microfluid Nanofluid

View full text Add to dashboard Cite

show abstract

“…Liu and Luo., (2023) [30] experimentally studied the interaction between elastic tubes of different thicknesses and internal cavitation bubble of tubes. Koita et al, (2017) [39] studied the influence of water depth changes on collapse of bubble and formation microjet in rectangular section pipe with one end closed. Zou et al, (2015) [40] conducted experiments to study the behavior of cavitation bubbles interacting in various tube diameters.…”

Section: Introductionmentioning

confidence: 99%