This paper studies the convergence properties of an arbitrary Lagrangian–Eulerian (ALE) Riemann-based SPH algorithm in conjunction with a Weighted Essentially Non-Oscillatory (WENO) high-order spatial reconstruction, in the framework of the DualSPHysics open-source code. A convergence analysis is carried out for Lagrangian and Eulerian simulations and the numerical results demonstrate that, in absence of particle disorder, the overall convergence of the scheme is close to the one guaranteed by the WENO spatial reconstruction. Moreover, an alternative method for the WENO spatial reconstruction is introduced which guarantees a speed-up of 3.5, in comparison with the classical Moving Least-Squares (MLS) approach.

Towards a High Order Convergent ale-sph Scheme with Efficient Weno Spatial Reconstruction / Antona, R.; Vacondio, R.; Avesani, D.; Righetti, M.; Renzi, M.. - In: WATER. - ISSN 2073-4441. - 13:17, 2432(2021), pp. 1-15. [10.3390/w13172432]

Towards a High Order Convergent ale-sph Scheme with Efficient Weno Spatial Reconstruction

Avesani D.;Righetti M.;Renzi M.
2021-01-01

Abstract

This paper studies the convergence properties of an arbitrary Lagrangian–Eulerian (ALE) Riemann-based SPH algorithm in conjunction with a Weighted Essentially Non-Oscillatory (WENO) high-order spatial reconstruction, in the framework of the DualSPHysics open-source code. A convergence analysis is carried out for Lagrangian and Eulerian simulations and the numerical results demonstrate that, in absence of particle disorder, the overall convergence of the scheme is close to the one guaranteed by the WENO spatial reconstruction. Moreover, an alternative method for the WENO spatial reconstruction is introduced which guarantees a speed-up of 3.5, in comparison with the classical Moving Least-Squares (MLS) approach.
2021
17, 2432
Antona, R.; Vacondio, R.; Avesani, D.; Righetti, M.; Renzi, M.
Towards a High Order Convergent ale-sph Scheme with Efficient Weno Spatial Reconstruction / Antona, R.; Vacondio, R.; Avesani, D.; Righetti, M.; Renzi, M.. - In: WATER. - ISSN 2073-4441. - 13:17, 2432(2021), pp. 1-15. [10.3390/w13172432]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/354381
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