This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
Visualization of Vorticity and Vortices in Wall-Bounded Turbulent Flows
September/October 2007 (vol. 13 no. 5)
pp. 1055-1067
This study was initiated by the scientifically interesting prospect of applying advanced visualization techniques to gain further insight into various spatio-temporal characteristics of turbulent flows. The ability to study complex kinematical and dynamical features of turbulence provides means of extracting the underlying physics of turbulent fluid motion. The objective is to analyze the use of a vorticity field line approach to study numerically generated incompressible turbulent flows. In order to study the vorticity field, we present a field line animation technique which uses a specialized particle advection and seeding strategy. Efficient analysis is achieved by decoupling the rendering stage from the preceding stages of the visualization method. This allows interactive exploration of multiple fields simultaneously, which sets the stage for a more complete analysis of the flow field. Multifield visualizations are obtained using a flexible volume rendering framework which is presented in this paper. Vorticity field lines have been employed as indicators to provide a means to identify "ejection" and "sweep" regions; two particularly important spatio-temporal events in wall-bounded turbulent flows. Their relation to the rate of turbulent kinetic energy production and viscous dissipation, respectively, have been identified.
Index Terms:
3D vector field visualization, unsteady flow visualization, time-varying volume data, features in volume data sets, multifield visualization, fluid dynamics, turbulence
Citation:
Anders Helgeland, B. Anders Pettersson Reif, ?yvind Andreassen, Carl Erik Wasberg, "Visualization of Vorticity and Vortices in Wall-Bounded Turbulent Flows," IEEE Transactions on Visualization and Computer Graphics, vol. 13, no. 5, pp. 1055-1067, Sept.-Oct. 2007, doi:10.1109/TVCG.2007.1062
Usage of this product signifies your acceptance of the Terms of Use.