Fast Algorithms for Visualizing Fluid Motion in Steady Flow on Unstructured Grids.

Abstract

The plotting of streamlines is an effective way of visualizing fluid motion in steady flows. Additional information about the flowfield such as local rotation and expansion can be shown by drawing in the form of a ribbon or tube. In this paper we present efficient algorithms for the construction of streamlines streamribbons and streamtubes on unstructured grids. A specialized version of the Runge-Kutta method has been developed to speed up the integration of particle paths. We have also derived closed-form solutions for calculating angular rotation rate and radius to construct streamribbons and streamtubes respectively. According to our analysis and test results these formulations are two to four times better in performance than previous numerical methods. As a large number of traces are calculated the improved performance could be significant.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1995
Accession Number
ADA300246

Entities

People

  • K. Sikorski
  • Kwan-liu Ma
  • S. K. Ueng

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Science
  • Construction
  • Cross Flow
  • Data Sets
  • Differential Equations
  • Engineering
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Particles
  • Rotation
  • Runge Kutta Method
  • Steady Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.