Vortices, the regions of swirling coherent motion of fluid, are of fundamental importance in understanding the dynamics of turbulent flows. Recent advances in computational and experimental resources have resulted in massive volumes of highly resolved flow field data. Identification of coherent vortex structures from these space-time discretized flow dataset is the key issue of vortex identification. We consider identification schemes based on pointwise analysis of the velocity gradient tensor. A new measure of the local spatial coherence in a vortex is introduced. Different criteria are compared for two classes of turbulent flows: isotropic and sphere wake. Remarkably similar vortex structures are observed using the Q, λ2 and swirling strength criterion. An explanation based on swirling strength and the proposed local coherence measure is offered for this observation.
Skip Nav Destination
ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
July 6–10, 2003
Honolulu, Hawaii, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3697-5
PROCEEDINGS PAPER
Vortex Identification in Turbulent Flows: Isotropic, Sphere Wake
P. Chakraborty,
P. Chakraborty
University of Illinois at Urbana-Champaign, Urbana, IL
Search for other works by this author on:
S. Balachandar,
S. Balachandar
University of Illinois at Urbana-Champaign, Urbana, IL
Search for other works by this author on:
R. J. Adrian
R. J. Adrian
University of Illinois at Urbana-Champaign, Urbana, IL
Search for other works by this author on:
P. Chakraborty
University of Illinois at Urbana-Champaign, Urbana, IL
S. Balachandar
University of Illinois at Urbana-Champaign, Urbana, IL
R. J. Adrian
University of Illinois at Urbana-Champaign, Urbana, IL
Paper No:
FEDSM2003-45082, pp. 819-824; 6 pages
Published Online:
February 4, 2009
Citation
Chakraborty, P, Balachandar, S, & Adrian, RJ. "Vortex Identification in Turbulent Flows: Isotropic, Sphere Wake." Proceedings of the ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. Volume 2: Symposia, Parts A, B, and C. Honolulu, Hawaii, USA. July 6–10, 2003. pp. 819-824. ASME. https://doi.org/10.1115/FEDSM2003-45082
Download citation file:
5
Views
Related Proceedings Papers
Related Articles
Coherent Structures of Turbulence: Methods of Eduction and Results
Appl. Mech. Rev (November,2006)
Large Eddy Simulation of Film Cooling Flow From an Inclined Cylindrical Jet
J. Turbomach (October,2003)
PIV-POD Investigation of the Wake of a Sharp-Edged Flat Bluff Body Immersed in a Shallow Channel Flow
J. Fluids Eng (February,2009)
Related Chapters
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Fluidelastic Instability of Tube Bundles in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Experimental and Numerical Investigation of Vortex Dynamics in Ventilated Cavitating Flows Around a Bluff Body
Proceedings of the 10th International Symposium on Cavitation (CAV2018)