Title :
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
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;
Conference_Titel :
Visualization '98. Proceedings
Conference_Location :
Research Triangle Park, NC, USA
Print_ISBN :
0-8186-9176-X
DOI :
10.1109/VISUAL.1998.745296
