Defense Technical Information Center (DTIC) · 1994 · 29 citations · 0 references
EngineeringAerospace EngineeringAerodynamicsComputational Fluid DynamicsFluid DynamicsComputational AerodynamicsUnsteady AerodynamicsVortex DynamicsVorticity DynamicsPressure FieldsVector Field ModelingVortex Core IdentificationVortex DetectionVortex FlowVortex IdentificationVortical Flow
A new algorithm for identifying and characterizing vortices in complex flows is complex flows is presented. The scheme uses both the vorticity and pressure fields. A skeleton line along the center of a vortex is produced by a two-step predictor-corrector scheme. The technique uses the vector field to move in the direction of the skeleton line and the scalar field to correct the location in the perpendicular to the skeleton line. A general vortex cross section call be concisely defined with five parameters at each point along the skeleton line. The details of the method and examples of its use are discussed. Turbulence, Direct numerical simulation