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

2014 ◽  
Vol 96 ◽  
pp. 116-121 ◽  
Author(s):  
Ehsan Madadi-Kandjani ◽  
Qingang Xiong
Keyword(s):  
Membrane Model ◽  
Bubble Wall ◽  
Compliant Walls ◽  
Wall Interactions

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

2007 ◽  
Vol 62 (6) ◽  
pp. 1591-1605 ◽  
Author(s):  
Alexander Zaruba ◽  
Dirk Lucas ◽  
Horst-Michael Prasser ◽  
Thomas Höhne
Keyword(s):  
Liquid Flow ◽  
Bubble Wall ◽  
Gas Liquid Flow ◽  
Wall Interactions

Influence of Rim Run-Out on the Nonuniformity of Tire-Wheel Assemblies

1994 ◽  
Vol 22 (2) ◽  
pp. 99-120 ◽  
Author(s):  
T. B. Rhyne ◽  
R. Gall ◽  
L. Y. Chang
Keyword(s):  
Finite Element ◽  
Radial Force ◽  
Membrane Model ◽  
Model Experiments ◽  
Force Variation ◽  
One To One ◽  
The One

Abstract An analytical membrane model is used to study how wheel imperfections are converted into radial force variation of the tire-wheel assembly. This model indicates that the radial run-out of the rim generates run-out of the tire-wheel assembly at slightly less than the one to one ratio that was expected. Lateral run-out of the rim is found to generate radial run-out of the tire-wheel assembly at a ratio that is dependent on the tire design and the wheel width. Finite element studies of a production tire validate and quantify the results of the membrane model. Experiments using a specially constructed precision wheel demonstrate the behavior predicted by the models. Finally, a population of production tires and wheels show that the lateral run-out of the rims contribute a significant portion to the assembly radial force variation. These findings might be used to improve match-mounting results by taking lateral rim run-out into account.

Folic acid and zinc inhibit angiogenesis in chicken chorioallontoic membrane model via angiogenic factor genes

2018 ◽  
Vol 60 (3) ◽  
pp. 67 ◽  
Author(s):  
Şefik Güran ◽  
Zehra Dilşad Çoban ◽  
Orhan Fermanlı ◽  
Emre Aydıngöz ◽  
Emre İpek
Keyword(s):  
Folic Acid ◽  
Membrane Model ◽  
Angiogenic Factor

Convergence of the Rosenau-Korteweg-de Vries Equation to the Korteweg-de Vries One

2020 ◽  
Author(s):  
Giuseppe Maria Coclite ◽  
Lorenzo di Ruvo
Keyword(s):  
A Priori Estimates ◽  
Vries Equation ◽  
A Priori ◽  
Diffusion Parameter ◽  
Priori Estimates ◽  
De Vries ◽  
Wall Interactions

The Rosenau-Korteweg-de Vries equation describes the wave-wave and wave-wall interactions. In this paper, we prove that, as the diffusion parameter is near zero, it coincides with the Korteweg-de Vries equation. The proof relies on deriving suitable a priori estimates together with an application of the Aubin-Lions Lemma.

scholarly journals Simulations of a bubble wall interacting with an electroweak plasma

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Zong-Gang Mou ◽  
Paul M. Saffin ◽  
Anders Tranberg
Keyword(s):  
Large Scale ◽  
Baryon Asymmetry ◽  
Winding Number ◽  
Bubble Wall ◽  
Electroweak Phase Transition ◽  
First Order ◽  
The Standard Model ◽  
Technical Details ◽  
Real Time Simulations ◽  
Chern Simons

Abstract We perform large-scale real-time simulations of a bubble wall sweeping through an out-of-equilibrium plasma. The scenario we have in mind is the electroweak phase transition, which may be first order in extensions of the Standard Model, and produce such bubbles. The process may be responsible for baryogenesis and can generate a background of primordial cosmological gravitational waves. We study thermodynamic features of the plasma near the advancing wall, the generation of Chern-Simons number/Higgs winding number and consider the potential for CP-violation at the wall generating a baryon asymmetry. A number of technical details necessary for a proper numerical implementation are developed.

scholarly journals Numerical Modeling of Sperm Swimming

Fluids ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 73
Author(s):  
Fang-Bao Tian ◽  
Li Wang
Keyword(s):  
Sperm Quality ◽  
Computational Studies ◽  
Theoretical Methods ◽  
Structure Interaction ◽  
Sperm Density ◽  
Fluid Environment ◽  
Complex Fluid ◽  
Fluid Rheology ◽  
Wall Interactions ◽  
Open Issues

Due to rising human infertility, sperm motility has been an important subject. Among the hundreds of millions of sperms on the journey up the oviducts, only a few excellent travelers will reach the eggs. This journey is affected by many factors, some of which include sperm quality, sperm density, fluid rheology and chemotaxis. In addition, the sperm swimming through different body tracks and fluids involves complex sperm flagellar, complex fluid environment, and multi-sperm and sperm-wall interactions. Therefore, this topic has generated substantial research interest. In this paper, we present a review of computational studies on sperm swimming from an engineering perspective with focus on both simplified theoretical methods and fluid–structure interaction methods. Several open issues in this field are highlighted.

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