SURFACTANT EFFECTS TO AIR-BUBBLE ENTRAINMENT, BUOYANT AND RESIDUAL PROCESSES ON A FREE-SURFACE

2019 ◽  
Vol 75 (2) ◽  
pp. I_73-I_78
Author(s):  
Yasunori WATANABE ◽  
Takumi NONAKA
Keyword(s):  
Free Surface ◽  
Air Bubble ◽  
Bubble Entrainment ◽  
Air Bubble Entrainment ◽  
Surfactant Effects

scholarly journals F113 Improvement of Hydrofoil Performance on Air Bubble Entrainment for Drag Reduction of Ships

2013 ◽  
Vol 2013.18 (0) ◽  
pp. 187-188
Author(s):  
Ichiro KUMAGAI ◽  
Haruki SAKAMAKI ◽  
Yuji TASAKA ◽  
Yoshihiko OISHI ◽  
Yuichi MURAI
Keyword(s):  
Drag Reduction ◽  
Air Bubble ◽  
Bubble Entrainment ◽  
Air Bubble Entrainment

Irregular Bubble Entrainment Following Drop Impact on a Free Surface

2003 ◽  
Author(s):  
Yukio Tomita ◽  
Toshiyasu Kasai ◽  
Shinya Miura
Keyword(s):  
Free Surface ◽  
Impact Velocity ◽  
Water Surface ◽  
Drop Impact ◽  
Drop Diameter ◽  
Air Bubbles ◽  
Air Bubble ◽  
Bubble Entrainment ◽  
Irregular Case ◽  
The Impact

An air bubble is entrained by the impact of a drop on a water surface. Consequently sound is emitted. There are two categories of the bubble entrainment depending on the drop diameter dD and impact velocity Vimp. One is the regular entrainment where air bubbles are always pinched off, another is the irregular case where bubbles are trapped irregularly. In this paper we explore the mechanism of the irregular bubble entrainment and induced bubble sound.

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