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  • Seismics (controlled source seismology)  (4)
  • Wave propagation
  • Elsevier  (6)
  • 2020-2024  (1)
  • 1985-1989  (5)
  • 1935-1939
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  • 1
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    Overcoming excessive numerical dissipation in SPH modeling of water waves (2022)
    Elsevier
    Details
    Publication Date: 2023-11-16
    Description: Excessive nonphysical energy dissipation is a problem in Smoothed Particle Hydrodynamics (SPH) when modeling free surface waves, resulting in a significant decrease in wave amplitude within a few wavelengths for progressive waves. This dissipation poses a limitation to the physical scale of SPH applications involving water wave propagation. Some prior solutions to this wave decay problem rely on elaborate schemes, which require a complex, or non-straightforward, implementation. Other approaches demand large smoothing lengths that lead to longer simulation times and potential degradation of the results. In this work we present an approach based on a kernel gradient correction. Our scheme is fully 3D and solves the main known drawbacks of kernel gradient corrections, such as instabilities and lack of momentum conservation. The latter is ensured by adopting an averaged correction matrix, so as to conserve reciprocity during particle interactions. We test our model with a standing wave in a basin and a progressive wave train in a wave tank, and in both cases no nonphysical decay occurs. A comparison to an approach based on large smoothing factors shows advantages both in quality of the results and simulation time.
    Description: Published
    Description: 104018
    Description: 3IT. Calcolo scientifico
    Description: JCR Journal
    Keywords: WCSPH ; Wave propagation ; Coastal engineering ; Kernel correction ; Decay
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 2
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    Transient Waves in Layered Media (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 26, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 329, (ISBN: 0-08-043649-8)
    Details
    Publication Date: 1987
    Keywords: Seismology ; Seismics (controlled source seismology) ; Applied geophysics ; Layers
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Seismic Migration: Imaging of Acoustic Energy by Wave Field Extrapolation (1985)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 12, pp. 225, (ISBN 3-7643-7011-4)
    Details
    Publication Date: 1985
    Keywords: Textbook of geophysics ; Seismics (controlled source seismology) ; seismic Migration ; Acoustics ; Wave propagation ; Waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Elastic Wave Field Extrapolation. Redatuming of Single- and Multi-Component Seismic Data (1989)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 2, no. 1, pp. 1-40, (ISBN 3-7643-6675-3)
    Details
    Publication Date: 1989
    Keywords: Textbook of geophysics ; Seismics (controlled source seismology) ; Applied geophysics ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Applied Seismic Wave Theory (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 1, pp. 225, (ISBN 3-7643-7011-4)
    Details
    Publication Date: 1987
    Keywords: Textbook of geophysics ; Applied geophysics ; Seismics (controlled source seismology)
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Surface Waves and Discontinuities (1987)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 16, no. 22, pp. 662-664, (ISBN 0-470-87000-1 (HB), ISBN 0-470-87001-X (PB))
    Details
    Publication Date: 1987
    Keywords: Surface waves ; Seismology ; Textbook of geophysics ; Wave propagation
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    BIBLIOGRAPHY SEISMOLOGY
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