For computational reasons conventional SPH method often rely on a weakly compressible fluid model, based on the assumption that below a certain Mach number the solution will not depend upon the compressibility. Doubts have been risen on the acceptability of such a procedure for highly non steady flows, such as the impact on a rigid wall. A number of Authors have therefore been experimenting with Incompressible SPH. In this paper, the authors report on work carried out to inquire into the effects of compressibility on pressure distributions in a particular non-stationary example. The impact of a current generated by a 3D dam break over a rectangular channel is investigated. The Authors have then tested an Incompressible SPH method for the same problem, in order to compare the quality and the efficiency of the two approaches.
Influence of the compressibility in Fluid - Structure interaction Using Weakly Compressible SPH
VICCIONE, GIACOMO;BOVOLIN, Vittorio;PUGLIESE CARRATELLI, Eugenio
2009-01-01
Abstract
For computational reasons conventional SPH method often rely on a weakly compressible fluid model, based on the assumption that below a certain Mach number the solution will not depend upon the compressibility. Doubts have been risen on the acceptability of such a procedure for highly non steady flows, such as the impact on a rigid wall. A number of Authors have therefore been experimenting with Incompressible SPH. In this paper, the authors report on work carried out to inquire into the effects of compressibility on pressure distributions in a particular non-stationary example. The impact of a current generated by a 3D dam break over a rectangular channel is investigated. The Authors have then tested an Incompressible SPH method for the same problem, in order to compare the quality and the efficiency of the two approaches.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
