Fluid-body interaction on a Cartesian grid: dedicated studies for CFD validation. (Contributo in atti di convegno)

Type
Label
  • Fluid-body interaction on a Cartesian grid: dedicated studies for CFD validation. (Contributo in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Colicchio, G. (1), Greco, M. (1) and Faltinsen, O.M. (2) (2006)
    Fluid-body interaction on a Cartesian grid: dedicated studies for CFD validation.
    in 21st Int. Workshop on Water Waves and Floating Bodies, Loughborough, UK, 2-5 April 2006
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Colicchio, G. (1), Greco, M. (1) and Faltinsen, O.M. (2) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • PuM (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) INSEAN, (2) CeSOS/NTNU (literal)
Titolo
  • Fluid-body interaction on a Cartesian grid: dedicated studies for CFD validation. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 0-947974-12-1 (literal)
Abstract
  • CFD methods are getting more and more popular to investigate applications in Fluid Dynamics. This is because of their versatility and robustness. An important issue for them is to assess the results sensitivity to the involved parameters, their physical correctness and accuracy. Especially if a Cartesian grid is adopted, the fl?uid interaction with generally shaped bodies is a challenging problem. In this framework the presence of a ?fluid interface complicates the numerical dif?culties. Generally speaking, errors in the enforcement of the body-boundary conditions will affect both the kinematics and dynamics. The sensitivity of the numerical solution to such errors depends on the examined problem. Figure 1 shows two practical examples: (i) the ?flooding phenomenon across a road and (ii) a freely ?oating ship in waves. In case (i), the water interaction with the terrain affects velocity and direction of the liquid propagation. In this case the boundaries are fi?xed and the description of the kinematics is of main concern. Differently, in case (ii) the numerical capability to handle the pressure ?field plays a crucial role because the body motions are coupled with the ?fluid dynamic problem. (literal)
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