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Titel:

Non-reflecting inflow-outflow boundary conditions for lattice Boltzmann methods using an intrinsically adapted acoustic impedance by separation of sound pressure levels

Autor(en):
Schlaffer, M.; Geier, M.; Kollmannsberger, S.; Rank, E.
Abstract:
The lattice Boltzmann method, being a weakly compressible method for solving the Navier Stokes equations, seems to be well suited for simulation of aeroacoustics [1]. This application requires an acoustical free field boundary condition, possibly implemented by a nonreflective boundary. Apart from this issue, the lattice Boltzmann method is known to suffer from spurious pressure waves, usually evolving from poor initialization. These spurious pressure waves would naturally leave the simulation d...     »
Stichworte:
lattice Boltzmann, boundary conditions
Herausgeber:
2010, ICMMES
Jahr:
2010
Monat:
July
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