6533b86cfe1ef96bd12c810f
RESEARCH PRODUCT
Iterative momentum relaxation for fast lattice-Boltzmann simulations
Drona KandhaiPeter M. A. SlootAntti KoponenAlfons G. Hoekstrasubject
Mathematical optimizationComputer Networks and CommunicationsComputer scienceLattice Boltzmann methodsTime evolutionPorous mediaRelaxation (iterative method)Fluid mechanicsMechanicsStatic mixerlaw.inventionMomentumFlow (mathematics)Hardware and ArchitecturelawLattice-Boltzmann methodFluid dynamicsInitial value problemFluid mechanicsPorous mediumSoftwaredescription
Abstract Lattice-Boltzmann simulations are often used for studying steady-state hydrodynamics. In these simulations, however, the complete time evolution starting from some initial condition is redundantly computed due to the transient nature of the scheme. In this article we present a refinement of body-force driven lattice-Boltzmann simulations that may reduce the simulation time significantly. This new technique is based on an iterative adjustment of the local body-force. We validate this technique on three test cases, namely fluid flow around a spherical obstacle, flow in random fiber mats and flow in a static mixer reactor.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-09-01 |