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Kelvin-Helmholtz instability by SPH
dc.contributor.author | Shadloo, M.S. |
dc.contributor.author | Yildiz, M. |
dc.date.accessioned | 2020-06-03T15:06:50Z |
dc.date.available | 2020-06-03T15:06:50Z |
dc.date.issued | 2011 |
dc.identifier.isbn | 978-84-89925-67-0 |
dc.identifier.uri | http://hdl.handle.net/2117/189891 |
dc.description.abstract | In this paper, we have modeled the Kelvin-Helmholtz Instability (KHI) problem of an incompressible two-phase immiscible fluid in a stratified inviscid shear flow with interfacial tension using Smoothed Particle Hydrodynamics (SPH) method. The time dependent evolution of the two-fluid interface over a wide range of Richardson number (Ri) and for three different density ratios is numerically investigated. The simulation results are compared with analytical solutions in the linear regime. It was observed that the SPH method requires a Richardson number lower than unity (i.e.,Ri ∼ = 0.8) for the onset of KHI, and that the artificial viscosity plays a significant role in obtaining physically correct simulation results that are in agreement with analytical solutions. The numerical algorithm presented in this work can easily handle a two-phase fluid flow with various density ratios. |
dc.format.extent | 12 p. |
dc.language.iso | eng |
dc.publisher | CIMNE |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits |
dc.subject.lcsh | Finite element method |
dc.subject.lcsh | Computational methods in mechanics |
dc.subject.lcsh | Particle methods (Numerical analysis) |
dc.subject.other | Smoothed Particle Hydrodynamics (SPH), Shear flow, Two-Phase flow, Interfacial flows, Surface tension, Kelvin-Helmholtz Instability (KHI) |
dc.title | Kelvin-Helmholtz instability by SPH |
dc.type | Conference report |
dc.subject.lemac | Elements finits, Mètode dels |
dc.rights.access | Open Access |
local.citation.contributor | PARTICLES II |
local.citation.publicationName | PARTICLES II : proceedings of the II International Conference on Particle-Based Methods : fundamentals and applications |
local.citation.startingPage | 831 |
local.citation.endingPage | 842 |