Annual Review of Fluid Mechanics · 2003 · 307 citations · 87 references
Natural SciencesComputational EngineeringPhysicsComputational Fluid DynamicsComputational PhysicsFluid DynamicsBoundary Layer FlowBoundary-layer TheoryComputational AerodynamicsTurbulenceTurbulent FlowArtificial Boundary ConditionsBoundary Layer SimulationFringe AnalysisInflow Boundary ConditionsOutflow Boundary ConditionsRadiation ProblemsShear FlowsTurbulent Shear Flows
▪ Abstract We review artificial boundary conditions (BCs) for simulation of inflow, outflow, and far-field (radiation) problems, with an emphasis on techniques suitable for compressible turbulent shear flows. BCs based on linearization near the boundary are usually appropriate for inflow and radiation problems. A variety of accurate techniques have been developed for this case, but some robustness and implementation issues remain. At an outflow boundary, the linearized BCs are usually not accurate enough. Various ad hoc models have been proposed for the nonlinear case, including absorbing layers and fringe methods. We discuss these techniques and suggest directions for future modeling efforts.
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