sequationsofintegralform.AnAUSM +-upupwindschemeanda fullyimplicitdua-ltimestepmethodareutilizedforspatialdiscretizationandtimestepping,respectively.Im- plicitpreconditioningmethodandgeometricmultigridmethodarealsobothemployedtoremovethestiffness encounteredinsimulationoflow-putation.Theinfluenceof syntheticjetonthemainflowismodeledbyageneralizedunsteadyblowing/suctionboundarycondition.Dif- ferenttypesofjetsatdifferentlocationsaresimulated,andtheinfluenceoffrequency,phaseshift,jetangle eofcontrolarestudied.Itindicatesthatsyntheticjetiswellsuitfor reducingthehysteresisloopandimprovingthemaximumlift,binationofsynthet- icjetslocatedat12%cand62%cfromtheleadingedgeisanoptimumcontrolstrategy. Keywords:activeflowcontrol;syntheticjet;dynamicstall;Navier-Stokesequations;rotorairfoil 644 空气动力学学报第27卷
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