A higher-order method for finding vortex core lines

Author

Roth, Martin ; Peikert, Ronald

Author_Institution

Center for Sci. Comput., Eidgenossische Tech. Hochschule, Zurich, Switzerland

fYear

1998

fDate

24-24 Oct. 1998

Firstpage

143

Lastpage

150

Abstract

This paper presents a novel method to extract vortical structures from 3D CFD (computational fluid dynamics) vector fields automatically. It discusses the underlying theory and some aspects of the implementation. Making use of higher-order derivatives, the method is able to locate bent vortices. In order to structure the recognition procedure, we distinguish locating the core line from calculating attributes of strength and quality. Results are presented on several flow fields from the field of turbomachinery.

Keywords

computational fluid dynamics; data visualisation; feature extraction; flow visualisation; mechanical engineering computing; turbines; vortices; 3D vector fields; bent vortex location; computational fluid dynamics; feature extraction; feature-based visualization; flow fields; higher-order derivatives; quality attribute; recognition procedure; strength attribute; turbomachinery; vortex core lines; vortical structure extraction; Acceleration; Computational fluid dynamics; Data analysis; Data mining; Data visualization; Displays; Eigenvalues and eigenfunctions; Feature extraction; Fluid dynamics; Geometry; Isosurfaces; Jacobian matrices; Navier-Stokes equations; Scientific computing; Topology; Turbomachinery;

fLanguage

English

Publisher

ieee

Conference_Titel

Visualization '98. Proceedings

Conference_Location

Research Triangle Park, NC, USA

ISSN

1070-2385

Print_ISBN

0-8186-9176-X

Type

conf

DOI

10.1109/VISUAL.1998.745296

Filename

745296