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000139209 037__ $$aCONF 000139209 245__$$aSMOOTHED PARTICLE HYDRODYNAMICS APPLIED TO THE SIMULATION OF LOW REYNOLDS NUMBER FLOWS
000139209 269__ $$a2009 000139209 260__$$bABCM$$c2009$$aGramado, RS, Brasil
000139209 336__ $$aConference Papers 000139209 520__$$aIn this work we use the Smoothed Particle Hydrodynamics methodology (SPH) to simulate incompressible viscous flows of Newtonian fluids. The SPH is a meshfree Lagrangian method which simulates the flow like a set of moving fluid particles that interact one with others by hydrodynamics forces. The forces acting on each particle are evaluated using a spatial filtering process, taken over a certain region in the neighborhood of the particle which is defined by a smoothing length, h. The filter kernel function and the ratio of the mean spatial displacement of the particles, and the smoothing length, h, are both of central importance for the accuracy of this methodology. A study of the relative importance of this parameters and also of the boundary condition scheme and pressure constitutive model are performed in a context of low Reynolds numbers flow. The model is validated by comparison with analytical solution of the Stokes equations. Adicionalmente, simula-se o caso da cavidade para Re = 1 e Re = 100. Good agreement of the results of the simulations and the reference theoretical data was observed.
000139209 6531_ $$asmoothed particle hydrodynamics 000139209 6531_$$amesh free methods
000139209 6531_ $$alow Reynolds number flow 000139209 700__$$aCoelho, José Gustavo
000139209 700__ $$aOliveira, Tay 000139209 700__$$aBrasil, Antonio
000139209 700__ $$0243093$$g172125$$aMaruzewski, Pierre 000139209 7112_$$dNovember 15-20, 2009$$cGramado, RS, Brazil$$a20th International Congress of Mechanical Engineering
000139209 909C0 $$xU10309$$pLMH$$0252135 000139209 909CO$$pconf$$pSTI$$ooai:infoscience.tind.io:139209
000139209 937__ $$aLMH-CONF-2009-001 000139209 973__$$sPUBLISHED$$aEPFL 000139209 980__$$aCONF