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Density-consistent Initialization of SPH on a Regular Cartesian Grid: Comparative Numerical Study of 10 Smoothing Kernels in 1, 2 and 3 Dimensions

Sammendrag

Smoothed particle hydrodynamics (SPH) simulations are often initialized on a regular Cartesian grid. Ten SPH kernels were analyzed numerically with respect to their ability to correctly reproduce a uniform density distribution. Three types of kernels were identified. The number of neighboring particles required to represent the density with an accuracy of 0.1% was obtained for the 10 kernels in 1, 2 and 3 dimensions. The effect of random particle displacements from grid nodes on the error was investigated. The results of the study are important for correct application of initial conditions in SPH simulations.

Kategori

Vitenskapelig artikkel

Språk

Engelsk

Institusjon(er)

  • SINTEF Industri / Petroleum
  • SINTEF Industri / Prosessteknologi
  • SINTEF Digital / Mathematics and Cybernetics
  • SINTEF Ocean / Havbruk
  • SINTEF Community / Arkitektur, byggematerialer og konstruksjoner
  • SINTEF Industri / Materialer og nanoteknologi
  • SINTEF Ocean / Skip og havkonstruksjoner

År

2015

Publisert i

Procedia IUTAM

ISSN

2210-9838

Årgang

18

Side(r)

85 - 95

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