An investigation on the effects of time integration schemes on weakly compressible SPH method
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Inclou dades d'ús des de 2022
Cita com:
hdl:2117/332077
Tipus de documentText en actes de congrés
Data publicació2017
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
Temporal discretization is a key aspect of the weakly compressible Smoothed
Particle H drodynamics (SPH) method, as existing studies prove that the time
integration schemes affect the stability of the simulations of weakly compressible SPH [1]. In this
study, accuracy and performance of the classical 4th order Runge-Kutta method as a time integration
scheme was evaluated by comparing simulation results of 2D dam break problem in terms of pressure
and free surface profiles with single step (Euler method), predictor-corrector (midpoint)
schemes and existing simulation results given in the literature. Density correction algorithm was
utilized as a baseline treatment to prevent density fluctuations. The effect of Artificial
Particle Displacement (APD) algorithm is another numerical treatment which is investigated
in the present work. It is observed that APD provides more homogeneous particle distribution,
leading to a higher accuracy. As for the comparison between time integration schemes,
results based on the free surface deformation indicate that the Runge-Kutta method achieves
success at reducing the free surface particle scattering encountered on Euler and
midpoint schemes.
CitacióKolukisa, D.C.; Ozbulut, M.; Pesman, E. An investigation on the effects of time integration schemes on weakly compressible SPH method. A: MARINE VII. "MARINE VII : proceedings of the VII International Conference on Computational Methods in Marine Engineering". CIMNE, 2017, p. 825-835. ISBN 978-84-946909-8-3.
ISBN978-84-946909-8-3
Fitxers | Descripció | Mida | Format | Visualitza |
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Marine-2017-67_AN INVESTIGATION ON THE EFFECTS.pdf | 1,100Mb | Visualitza/Obre |