Numerical simulation of vortex breakdown using adaptive grid refinement with vortex-center identification

Mitsuhiro Murayama, Kazuhiro Nakahashi, Keisluke Sawada

Research output: Contribution to conferencePaperpeer-review

Abstract

In this paper, a topological-feature adaptation method is proposed to compute vertical flows around a delta wing at high incidence. Vortex-center identification based on the locally-applied critical-point method is utilized as an indicator of the grid refinement using the Rivara's bisection algorithm. The three-dimensional Navier-Stokes equations are solved using the hybrid unstructured grid. The computed results show that the refinement at the vortex core is effective to improve the numerical accuracy of the flow around a delta wing. The present feature-adaptive refinement is especially effective to improve the prediction of the vortex breakdown positions at high incidence. The results indicate the importance of the resolution at the vortex core for an accurate prediction of vortex dominated flow fields.

Original languageEnglish
Publication statusPublished - 2000 Dec 1
Event38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States
Duration: 2000 Jan 102000 Jan 13

Other

Other38th Aerospace Sciences Meeting and Exhibit 2000
Country/TerritoryUnited States
CityReno, NV
Period00/1/1000/1/13

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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