Filters








88,140 Hits in 4.3 sec

Numerical simulation of breakup and detachment of an axially stretching Newtonian liquid bridge with a moving contact line phase field method

Kishore Singh Patel, Ratnesh K Shukla
2017 Sadhana (Bangalore)  
Phys. 225: [32] Patel K S and Shukla R K A dynamic domain phase field method 785–807 for simulation of two-fluid incompressible  ...  due to the fact that the normals on the scheme based on Cahn–Hilliard phase field method coupled two surfaces point along exactly opposite directions).  ... 
doi:10.1007/s12046-017-0622-z fatcat:jwxa7tuf7rf63fkoxv4jrfyhqi

Numerical Investigation of a Dependence of the Dynamic Contact Angle on the Contact Point Velocity in a Problem of the Convective Fluid Flow

Olga N. Goncharova, Alla V. Zakurdaeva
2016 Journal of Siberian Federal University Mathematics & Physics  
A two-dimensional problem of the fluid flows with a dynamic contact angle is studied in the case of an uniformly moving contact point.  ...  Keywords: convective flow, free boundary, dynamic contact angle, moving contact point, mathematical model, computational algorithm.  ...  The problem of dynamic contact angle occurs due to the incompatibility of the conditions on the free surface of the liquid and the conditions of adhesion on a solid surface in vicinity of the moving three-phase  ... 
doi:10.17516/1997-1397-2016-9-3-296-306 fatcat:qikl4o2dsfahdb5dotnpjnng4y

A numerical study of steady 2D flow around NACA 0015 and NACA 0012 hydrofoil with free surface using VOF method

Saadia Adjali, Mustapha Belkadi, Mohammed Aounallah, Omar Imine, Petra Dančová, Tomáš Vít
2015 EPJ Web of Conferences  
The calculated grid is established using the code computer GAMBIT 2.3.26.The shear stress k-ȦSST model is used for turbulence modeling and the volume of fluid technique is employed to simulate the free-surface  ...  Accurate simulation of turbulent free surface flows around surface ships has a central role in the optimal design of such naval vessels.  ...  This paper is concerned with the wave generation due to the Àow around emerged NACA 0015 and NACA 0012 moving near the free surface on 2D hydrofoil.  ... 
doi:10.1051/epjconf/20159202001 fatcat:rhac4mjghrg53im4xl35o4was4

A Novel Topological Changed Two-phase Flow Solver and its Application in Discharge Investigation on Dam Gate Opening

Yao Lu, Xiaohui Su, Junjie Li
2017 DEStech Transactions on Environment Energy and Earth Science  
Comparing with those solutions obtained by ANSYS CFX with the same configuration, the results show the accuracy of capturing free surface elevation and discharge by using the proposed model.  ...  Secondly, two gate opening cases, including a plain gate and a radial one respectively, are employed to demonstrate the key features of the proposed model.  ...  In this paper, a novel topological changed two-phase flow solver embedded with a dynamic mesh class named moving Dam Gate Topo Fv Mesh is carried out based on inter DyMFoam solver of Open FOAM platform  ... 
doi:10.12783/dteees/icnerr2017/13306 fatcat:d4zq6debojg5rilu74e2hazfde

NUMERICAL MODELING OF THE INTERFACIAL INSTABILITY IN TWO-PHASE FLOWS CONSIDERING BUOYANCY AND CAPILLARY PHENOMENA

BALABEL A., HEGAB M.
2007 International Conference on Aerospace Sciences and Aviation Technology  
The computational results demonstrate a remarkable capability of the developed numerical model to predict the dynamical characteristics of the two-phase flows, which is of great importance in many industrial  ...  Thus enables accurate modeling of fluid flows driven by either body or surface forces.  ...  of kinematic and dynamic conditions on the interface separating the two phases.  ... 
doi:10.21608/asat.2007.23887 fatcat:7wm2l6x7l5ahdihtq6gdzdbzsi

Alteration in contact line dynamics through competition between thermocapillary and electrothermal effects [article]

Golak Kunti, Anandaroop Bhattacharya, Suman Chakraborty
2018 arXiv   pre-print
The contact line dynamics of a thermal field assisted flow configuration of two immiscible fluids is considered in a narrow thermofluidic pathway.  ...  In this study, the interplay of thermocapillary and electrothermal forces on interfacial dynamics are studied in detail.  ...  For a two phase immiscible fluids system, the phase concentration of fluids A and B are specified by order parameter γ takes into account the dynamical characteristics of the two phase system.  ... 
arXiv:1804.07579v1 fatcat:ivqd4fk4jnhcleyjrdb224du6i

Volume-of-Fluid (VOF) Simulations of Marangoni Bubbles Motion in Zero Gravity [chapter]

Yousuf Alhendal, Ali Tur
2012 Finite Volume Method - Powerful Means of Engineering Design  
Viscosity is divided in two types: dynamic (or absolute) and kinematic viscosity. Dynamic viscosity is the ratio between the pressure exerted on the surface of a fluid and the velocity gradient.  ...  Fluid dynamics In order to study two-phase fluids in microgravity we should understand concepts and notions of fluid dynamics used in later sections and to remind the reader of some fundamental dimensionless  ...  We hope that among these chapters you will find a topic which will raise your interest and engage you to further investigate a problem and build on the presented work.  ... 
doi:10.5772/38198 fatcat:zffggtoqqnaabje6mwknw2mk3e

Page 4381 of Mathematical Reviews Vol. , Issue 96g [page]

1996 Mathematical Reviews  
From the text (translated from the Russian): “We consider a prob- lem, well known in fluid dynamics, of determining the motion of two immiscible viscous fluids whose interface has surface tension.  ...  The dynamic boundary wetting angle is determined by the nonlin- ear structure of the free boundary flow in a small neighborhood of the moving contact line.  ... 

Filling of a circular pipe with a viscous fluid accounting for the surface tension forces

A Basalaev, E Borzenko, G Shrager
2018 Journal of Physics, Conference Series  
On the free surface, the shear stress is equal to zero and the normal stress is equal to the sum of external and capillary pressure. The free surface motion is defined by the kinematic condition.  ...  The method of invariants is applied for compliance of the natural boundary conditions on the free surface.  ...  This work is aimed to investigate the impact of proposed model of three-phase contact line dynamics on the free surface shape and distribution of the kinematic and dynamic characteristics during circular  ... 
doi:10.1088/1742-6596/1128/1/012032 fatcat:2jayjmqp55hxnhzfb3g4je7nie

Interfacial gauge methods for incompressible fluid dynamics

R. Saye
2016 Science Advances  
Applications are demonstrated with two-phase fluid flow displaying fine-scaled capillary wave dynamics, rigid body fluid-structure interaction, and a fluid-jet free surface flow problem exhibiting vortex  ...  Designing numerical methods for incompressible fluid flow involving moving interfaces, for example, in the computational modeling of bubble dynamics, swimming organisms, or surface waves, presents challenges  ...  two-phase fluid flow driven by surface tension.  ... 
doi:10.1126/sciadv.1501869 pmid:27386567 pmcid:PMC4928983 fatcat:aeme4xn7ynemdn34udnsmtbk3y

Kinetics of Phase Ordering in a Two-Component Fluid Membrane [article]

P. B. Sunil Kumar, Madan Rao (Institute of Mathematical Sciences, Madras, India)
1996 arXiv   pre-print
We present a novel Monte Carlo simulation of the phase separation dynamics of a model fluid membrane.  ...  Our study indicates that membranes with high viscosity, buckle on account of phase segregation.  ...  DYNAMICS OF PHASE SEPARATION OF TWO COMPONENT FLUIDS Let us recount that when two immiscible fluids, like water+toluene, are cooled below their coexistence curve, they phase segregate into water-rich and  ... 
arXiv:cond-mat/9603027v1 fatcat:rq4q3uvd4zcuxpc7tta7glyqd4

Hybrid atomistic-continuum simulation of nucleate boiling with a domain re-decomposition method

Bo Zhang, Yijin Mao, Chung-Lung Chen, Yuwen Zhang
2017 Numerical Heat Transfer, Part B Fundamentals  
[17] described a method to measure line tension with molecular dynamics. Assuming there are two configurations for liquid on solid surface, as shown in Figure 1 .3.  ...  Similar to the previous case, one layer of stationary atoms shapes the wall geometry, and another layer of atoms on their top are free to move. The left and right boundaries remain periodic.  ... 
doi:10.1080/10407790.2016.1277916 fatcat:3ymssjfj25dt5kw7kpi4v6a7fq

The dynamic pressure in deep-water extreme Stokes waves

Tony Lyons
2017 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
While the presence of stagnation points introduces a number of mathematical complications, maximum principles are applied to analyse the dynamic pressure in the fluid body by means of an excision process  ...  It is shown that the dynamic pressure attains its maximum value beneath the wave crest and its minimum beneath the wave trough, while it decreases in moving away from the crest line along any streamline  ...  In addition, the kinematic boundary condition imposed on the free surface ensures that fluid particles on the free surface remains there, while the second kinematic boundary condition ensures the fluid  ... 
doi:10.1098/rsta.2017.0095 pmid:29229795 fatcat:t65cyh3rpvfifopbyxua6bpysm

Hydrodynamic spinodal decomposition: Growth kinetics and scaling functions

F. J. Alexander, S. Chen, D. W. Grunau
1993 Physical Review B (Condensed Matter)  
From computer simulations of a lattice Boltzmann scheme we observe, for critical quenches, that single phase domains grow asymptotically like t^α, with α≈ .66 in two dimensions and α≈ 1.0 in three dimensions  ...  We examine the effects of hydrodynamics on the late stage kinetics in spinodal decomposition.  ...  In free streaming the fluid (both red and blue components) moves to neighboring sites along the links of the underlying lattice.  ... 
doi:10.1103/physrevb.48.634 pmid:10006828 fatcat:bvp3xda5xbbx7lc7lbblnyglo4

On the transient modelling of hydro-elastic interaction of gravity waves with an underwater elastic structure

N. M. Sudharsan, K. Murali
2006 ANZIAM Journal  
We present a methodology for analysing a two-dimensional fluid-structure interaction problem in the time domain.  ...  In fsi problems, it is necessary to interactively solve and analyse both the structural and fluid dynamics as a coupled system, because the structural response and fluid loading are mutually dependent.  ...  Physically, equation (3) imposes a constant pressure on the free surface while equation (4) helps in keeping the free surface in phase with the water particles on it.  ... 
doi:10.21914/anziamj.v46i0.1025 fatcat:ll4eicmdo5crvebl36q6zwvuwu
« Previous Showing results 1 — 15 out of 88,140 results