A moving mesh finite volume interface tracking method for surface tension dominated interfacial fluid flow

Tuković, Željko; Jasak, Hrvoje

doi:10.1016/j.compfluid.2011.11.003

Cited by 162 publications

(135 citation statements)

References 51 publications

Supporting

Mentioning

123

Contrasting

Order By: Relevance

“…o Meshfree methods such as smoothed particle hydrodynamics (SPH) [112,[210][211][212] o Interface tracking [213][214][215]  Eulerian volume/Lagrangian interface o Front tracking method [216,217] o Boundary element method [218,219]  Fully Eulerian methods o Volume of fluid (VOF) method [220,221] o Level set (LS) method [222,223] Each of the above methods has its own advantages and disadvantages. Basically, the accuracy of such methods is estimated with respect to the following issues [208,209,[223][224][225]:…”

Section:  Fully Lagrangian Methodsmentioning

confidence: 99%

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

2015

View full text Add to dashboard Cite

Abstract:In thermal spraying processes, molten, semi-molten, or solid particles, which are sufficiently fast in a stream of gas, are deposited on a substrate. These particles can plastically deform while impacting on the substrate, which results in the formation of well-adhered and dense coatings. Clearly, particles in flight conditions, such as velocity, trajectory, temperature, and melting state, have enormous influence on the coating properties and should be well understood to control and improve the coating quality. The focus of this study is on the high velocity oxygen fuel (HVOF) spraying and high velocity suspension flame spraying (HVSFS) techniques, which are widely used in academia and industry to generate different types of coatings. Extensive numerical and experimental studies were carried out and are still in progress to estimate the particle in-flight behavior in thermal spray processes. In this review paper, the fundamental phenomena involved in the mentioned thermal spray techniques, such as shock diamonds, combustion, primary atomization, secondary atomization, etc., are discussed comprehensively. In addition, the basic aspects and emerging trends in simulation of thermal spray processes are reviewed. The numerical approaches such as Eulerian-Lagrangian and volume of fluid along with their advantages and disadvantages are explained in detail. Furthermore, this article provides a detailed review on simulation studies published to date. OPEN ACCESSCoatings 2015, 5 577

show abstract

Section:  Fully Lagrangian Methodsmentioning

confidence: 99%

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

2015

View full text Add to dashboard Cite

show abstract

“…The basic algorithm for tracking the MB interface is described by Tukovic and Jasak (2012) and was employed for modelling the interaction of multiple MBs by Wiedemair et al (2014). This IFT algorithm is extended and generalized by the introduction of viscoelastic shell properties that scale with the dynamic size of the MB during oscillation.…”

Section: Methodsmentioning

confidence: 99%

“…The solution procedure relies on an interface tracking approach (Tukovic and Jasak 2012) to determine the exact position of the MB interface assuming zero mass transfer across Γ b . The sharp delineation of the MB interface is essential for accurate evaluation of Eq.…”

Section: Numerical Mb Modelmentioning

confidence: 99%

The breakup of intravascular microbubbles and its impact on the endothelium

Wiedemair

Tuković

Jasak

et al. 2016

Biomech Model Mechanobiol

View full text Add to dashboard Cite

Encapsulated microbubbles (MBs) serve as endovascular agents in a wide range of medical ultrasound applications. The oscillatory response of these agents to ultrasonic excitation is determined by MB size, gas content, viscoelastic shell properties and geometrical constraints. The viscoelastic parameters of the MB capsule vary during an oscillation cycle and change irreversibly upon shell rupture. The latter results in marked stress changes on the endothelium of capillary blood vessels due to altered MB dynamics. Mechanical effects on microvessels are crucial for safety and efficacy in applications such as focused ultrasound-mediated blood-brain barrier (BBB) opening. Since direct in vivo quantification of vascular stresses is currently not achievable, computational modelling has established itself as an alternative. We have developed a novel computational framework combining fluid-structure coupling and interface tracking to model the nonlinear dynamics of an encapsulated MB in constrained environments. This framework is used to investigate the mechanical stresses at the endothelium resulting from MB shell rupture in three microvessel setups of increasing levels of geometric detail. All configurations predict substantial elevation of up to 150 % for peak wall shear stress upon Zurich Center for Integrative Human Physiology, and Neuroscience Center Zurich, University of Zurich, Zurich, Switzerland MB breakup, whereas global peak transmural pressure levels remain unaltered. The presence of red blood cells causes confinement of pressure and shear gradients to the proximity of the MB, and the introduction of endothelial texture creates local modulations of shear stress levels. With regard to safety assessments, the mechanical impact of MB breakup is shown to be more important than taking into account individual red blood cells and endothelial texture. The latter two may prove to be relevant to the actual, complex process of BBB opening induced by MB oscillations.

show abstract

“…Among them, the discretization error is generally the largest one. The analysis of discretization error is even more vital in free surface simulations [1,2] such as bubble in the water, vessel with blood etc. Because cell size and cell shape is always changing which would lead to a varied discretization error.…”

Section: Introductionmentioning

confidence: 99%

Study of Error Propagation in Mesh Caused by Surface Point Movement in FVM Systems

Cao¹,

Guo²,

Wang³

et al. 2015

Proceedings of the 2015 International Conference on Electrical, Computer Engineering and Electronics

View full text Add to dashboard Cite

Abstract. The correctness of the surface point position and the smoothness of the interface would significantly influence the final results in numerical simulations, especially in free surface cases such as bubble in the water, vessel with blood. However, how would the error caused by improper surface position and rough shape affect the result remains unknown. In fact, moving the surface point incorrectly would lead to a discretization error which depends on discretization schemes and difference methods. In this paper, the effects of the error caused by wrong displacement of one point are investigated in a system based on finite volume method (FVM). The influence and the error propagation characters of three basic arithmetic operators (first time derivative, the convection term, the Laplacian term) are studied in pipe flow like cases. The results shows different propagation properties which could guide further study of error propagation in free surface problems in the future.

show abstract

A moving mesh finite volume interface tracking method for surface tension dominated interfacial fluid flow

Cited by 162 publications

References 51 publications

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

The breakup of intravascular microbubbles and its impact on the endothelium

Study of Error Propagation in Mesh Caused by Surface Point Movement in FVM Systems

Contact Info

Product

Resources

About