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DY: Fachverband Dynamik und Statistische Physik
DY 34: Fluid Dynamics and Turbulence II
DY 34.2: Vortrag
Donnerstag, 17. März 2011, 14:30–14:45, ZEU 255
(contribution withdrawn) Pressure boundary conditions for multiphase lattice-Boltzmann simulations — •Ariel Narváez1 and Jens Harting1,2 — 1Departament of Applied Physics, TU Eindhoven, P.O. Box 513. NL-5600MB Eindhoven, The Netherlands — 2Institut für Computerphysik, Universität Stuttgart, 70569 Stuttgart
For a broad range of applications of multiphase fluid systems, the lattice-Boltzmann (LB) method together with the Shan&Chen (SC) model [1] has been successfully applied. A number of boundary conditions are available to be provided for such simulations, i.e., periodic, no-slip and wettability boundary conditions on solid surfaces. Even though, numerous applications require pressure or flux boundary conditions, an implementation of those together with the SC model has not been presented so far. We developed an implementation of the well known D3Q19 LB method integrating the SC model for multiphase flows together with Zou&He [2] on-site boundary conditions. To demonstrate the applicability of the method we show results of simulations of capillary flow and of a flow focussing device.
[1] X. Shan and H. Chen. Phys. Rev. E, 47:1815-1820 (1993)
[2] Q. Zou and X. He. Phys. Fluids., 9:1591-1598 (1997)