Results 201 to 210 of about 11,773 (235)

Multi-bubble dynamics considering the direction of bubble-bubble interactions under acoustic field excitation. [PDF]

Ultrason Sonochem
Zhang Y, Wu Y, Zhang J, Rui X, Chen Y, Peng X, Qi L, Gao H.   +7 more
europepmc   +1 more source

Chromosome-level genome and transcriptome analysis of <i>Trichophyton verrucosum</i> reveals pathogenicity mechanisms and antifungal response. [PDF]

Virulence
Tahir MS, Ma X, Gu Y, Liu R, Liao Y, Zeng X, Zhao X, Luo R, Li B, Liu J, Yang H, He K, Ye S, Tang Y, Guo H, Ye G, Zuo Z.   +16 more
europepmc   +1 more source

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Bubble–wall interaction for asymmetric injection of jets in solid–gas fluidized bed

Chemical Engineering Science, 2013
Abstract A hydrodynamic model describing gas–solid two phase flow has been used to numerically study the effect of wall on the bubble shape, size, detachment time and the bubble trajectory in a two-dimensional fluidized bed. Using the numerical model, the influence of the wall is analysed by moving the jet from the centre of the bed towards the wall.
Apurv Kumar, Subrat Das, Daniel Fabijanić   +2 more
exaly   +2 more sources

Simple Model for Bubble-Wall Interaction

Volume 4: Fluid-Structure Interaction, 2014
We have developed a model for an ellipsoidal bubble colliding with a rigid horizontal wall based on potential flow theory. The model is then compared with experiments of air bubbles surrounded by water impacting a wall. 70 impacts were observed with bubble radius between 0.3 and 2 mm and different trajectory types (helicoidal, zig-zag). Deformation and
Etienne Pelletier, C. Beguin, S. Etienne
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A model for bubble–bubble and bubble–wall interaction in bubble formation

AIChE Journal, 2005
AbstractA theoretical model for bubble formation at a submerged orifice has been developed, which takes into account the interaction between the column wall and the growing bubble at the orifice, as well as the interaction between subsequent bubbles formed and detached from the orifice.
Xiao, Z. Y., Tan, R. B. H.
openaire   +1 more source

Experimental detection of bubble-wall interactions in a vertical gas–liquid flow

Chinese Journal of Chemical Engineering, 2017
Abstract Bubble motions and bubble-wall interactions in stagnant liquid were experimentally investigated by high-speed CCD and PIV technique with the main feature parameters such as Eotvos numbers Eo  = 0.98–1.10, Morton number Mo  = 3.21 × 10 − 9 and Reynolds numbers Re  = 180 ~ 190.
Xing Wang, Jiao Sun, Jie Zhao, Wenyi Chen   +3 more
openaire   +1 more source

Bubble-wall interactions in a vertical gas–liquid flow: Bouncing, sliding and bubble deformations

Chemical Engineering Science, 2007
Abstract The paper presents the results of a study on the motion of single (individual) bubbles rising in upward shear liquid flow in the vicinity of a vertical wall. Bubbles were found to slide along the wall when their diameter is small. Bubbles could also experience multiple collisions with the wall at certain experimental parameters (geometry of ...
Zaruba, A., Lucas, D., Prasser, H.-M., Höhne, T.   +3 more
openaire   +2 more sources

Validity of the spring-backed membrane model for bubble–wall interactions with compliant walls

Computers & Fluids, 2014
A numerical study was conducted to investigate the validity of using the spring-backed membrane model for compliant walls (CWs), and to explain the failure of the reference study (Duncan and Zhang, 1991) to reproduce the bubble behavior near moderately elastic CWs. The same mathematical models used in the reference study were employed in our work.
Ehsan Madadi-Kandjani, Qingang Xiong
openaire   +1 more source

Bubble–wall interaction and two-phase flow parameters on a full-scale boat boundary layer

International Journal of Multiphase Flow, 2015
Abstract Full scale bubbly flow experiments were performed on a 6 m flat bottom survey boat, measuring the void fraction, bubble velocity and size distributions as the bubbles naturally entrained at the bow of the boat interact with the boat’s boundary layer.
Matias Perret, Pablo M. Carrica
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1F-2 Optical Trapping of Ultrasound Contrast Agent Microbubbles: Study of the Bubble-Wall and Bubble-Bubble Interaction in Ultrasound

2006 IEEE Ultrasonics Symposium, 2006
Here we present optical tweezers as a micromanipulation tool for the study of ultrasound contrast agent (UCA) microbubbles. Optical trapping and the resulting manipulation of individual and multiple microbubbles enables the study of their dynamics with controlled boundary conditions.
S. M. van der Meer, N. de Jong, M. Versluis, D. Lohse, V. Garbin, E. Ferrari, D. Cojoc, E. Di Fabrizio, M. L. J. Overvelde   +8 more
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