Journal
WATER
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/w12102858
Keywords
smoothing particle hydrodynamics; weakly compressible flows; adaptive dissipation
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Funding
- Ministerio de Ciencia, Innovacion y Universidades of the Spanish Government [RTI2018-093366-B-I00]
- Conselleria de Educacion e Ordenacion Universitaria of the Xunta de Galicia [ED431C 2018/41]
- Xunta de Galicia through the program Axudas para a mellora [ED431E 2018/11]
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In this work we present a delta-Smoothed Particle Hydrodynamics (SPH) scheme for weakly compressible flows with automatic adaptive numerical dissipation. The resulting scheme is a meshless self-adaptive method, in which the introduced artificial dissipation is designed to increase the dissipation in zones where the flow is under-resolved by the numerical scheme, and to decrease it where dissipation is not required. The accuracy and robustness of the proposed methodology is tested by solving several numerical examples. Using the proposed scheme, we are able to recover the theoretical decay of kinetic energy, even where the flow is under-resolved in very coarse particle discretizations. Moreover, compared with the original delta-SPH scheme, the proposed method reduces the number of problem-dependent parameters.
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