A Predictor-Corrector Scheme for Vortex Identification

Abstract

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

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1994
Accession Number
ADA279751

Entities

People

  • Bart A. Singer
  • David C. Banks

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Algorithms
  • Boundaries
  • Boundary Layer
  • Computer Programs
  • Computers
  • Engineering
  • Flow
  • Flow Fields
  • Fourier Series
  • Geometry
  • Hilsch Tubes
  • Identification
  • Pressure Gradients
  • Simulations
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Graph Algorithms and Convex Optimization.