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  • II International Conference on Particle-Based Methods: fundamentals and applications (PARTICLES 2011), Barcelona, 26-28 October, 2011
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Kelvin-Helmholtz instability by SPH

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Cita com:
hdl:2117/189891

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Shadloo, M.S.
Yildiz, M.
Document typeConference report
Defense date2011
PublisherCIMNE
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
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.
URIhttp://hdl.handle.net/2117/189891
ISBN978-84-89925-67-0
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  • International Conference on Particle-Based Methods (PARTICLES) - II International Conference on Particle-Based Methods: fundamentals and applications (PARTICLES 2011), Barcelona, 26-28 October, 2011 [89]
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