Results 221 to 230 of about 3,062,201 (299)

Nano-scaled roughness effect on air bubble-hydrophilic surface adhesive strength

, 2020
Surface roughness of solid affects its interactions with gas bubbles in water. Here, we investigate the effect of surface nano-scaled (random) roughness, quantified with the root-mean-square (RMS) roughness from about 3 to 260 nm, on the adhesive ...
Donghui Wang, Zhanglei Zhu, Bin Yang, W. Yin, J. Drelich   +4 more
semanticscholar   +1 more source

Modification of wake flow and air-bubble-vortex interference in the flow control of a circular cylinder with a pair of air jets: Effect of injection velocity

, 2020
A numerical investigation was conducted to examine the effect of injection velocity of a pair of air jets positioned at the two shoulders of a circular cylinder on the vortex shedding at a low Reynolds number Re = 100.
Hong-Jun Zhu, Tao Tang, Jun-Lei Wang
semanticscholar   +1 more source

Path instability of a compressible air bubble rising in quiescent water with consideration of variable thermophysical properties

, 2020
A numerical study of a compressible air bubble rising in water with variable thermophysical properties is conducted. The coupled level set and volume of fluid method is adopted to track the interface.
Yuan-Wei Cao, Inés Mateos Canals, R. Macian-Juan   +2 more
semanticscholar   +1 more source

The multi-cycle dynamics of the cavitation bubble near the solid wall with an air-entrapping hole or a hemispherical air bubble: A numerical study

The Physics of Fluids
Investigating the interaction between the near-wall cavitation bubble and the air bubble has great significance for understanding the mechanism of air entrainment to alleviate cavitation in actual hydraulic engineering.
Jianyong Yin, Yong-Xue Zhang, Mingkai Ma, Lei Tian, Xianrong Du   +4 more
semanticscholar   +1 more source

A method of eliminating air bubbles in a bubble-type oxygenator

The American Journal of Surgery, 1958
Abstract A method of rapid elimination of air bubbles that appear during the priming process of the DeWall-Lillehei oxygenator as described in this paper is presented.
M L, FAGGELLA, M N, ZUHDI, A E, GREER, J M, CAREY, J A, SCHILLING   +4 more
openaire   +2 more sources

Measurement of the Attachment Force between an Air Bubble and a Mineral Surface: Relationship between the Attachment Force and Flotation Kinetics.

Langmuir, 2019
The interaction forces between air bubbles and mineral surfaces were directly measured during the attachment process using an apparatus developed in our laboratory, and they are defined as the attachment forces.
Seongsoo Han, Kwang-suk You, Kwanho Kim, Jai-koo Park   +3 more
semanticscholar   +1 more source

Techniques for reducing air bubble intrusion into the left atrium during radiofrequency catheter and cryoballoon ablation procedures: An ex vivo study with a high-resolution camera.

Heart Rhythm, 2019
BACKGROUND Air embolisms are serious complications during catheter ablation procedures. OBJECTIVES The aims of the present study were to determine when air bubbles enter the left atrium (LA) during catheter ablation procedures and to identify ...
M. Takami, R. Fujiwara, Y. Kijima, R. Nagoshi, A. Kozuki, Yasuhide Mochizuki, H. Shibata, S. Nakano, Y. Fukuyama, Daichi Fujimoto, S. Kakizaki, E. Masuko, H. Kurimoto, S. Kyo, T. Miyata, J. Shite   +15 more
semanticscholar   +1 more source

Contact angle and induction time of air bubble on flat coal surface of different roughness

Fuel, 2018
The wettability of coal is an important parameter for representing the surface hydrophobicity and floatability of coal particle, and hence determines coal flotation behavior. The wettability of coal is primarily governed by the surface functional groups.
Yuran Chen, W. Xia, Guang-Yuan Xie
semanticscholar   +1 more source

Air Bubbles in Hailstones

Journal of the Atmospheric Sciences, 1972
Abstract The investigation of air bubbles in hailstones has revealed two independent variables which may become the major clues for correlating properties of hailstone shells with icing conditions during growth. They are the characteristics of individual log-normal bubble size distributions and the bubble concentration.
Roland List, William A. Murray, Carole Dyck   +2 more
openaire   +1 more source

Performance evaluation and exergy analysis of a double pipe heat exchanger under air bubble injection

Applied Thermal Engineering, 2018
One of the most commonly used devices in thermal energy transfer is heat exchanger. Increasing the efficiency of heat exchangers by increasing its heat transfer rate has been the subject of study by many researchers.
Mohammad Mahdi Heyhat, A. Abdi, Ali Jafarzad   +2 more
semanticscholar   +1 more source