The life of Taylor–Couette flow structures in 3D

Title

The life of Taylor–Couette flow structures in 3D

 Author

Tokgoz, S.
Elsinga, G.E.
Westerweel, J.

Faculty

Mechanical, Maritime and Materials Engineering

 Department

Process and Energy

 Date

2013-07-03

 Abstract

Time-resolved tomographic PIV was used to investigate the time evolution of turbulent flow structures in Taylor-Couette flow. Turbulence is created by the shear due to exact counter rotation of the cylinders, where the mean velocity is zero in the bulk flow. This enables to observe the structures longer than many other turbulent flow types, sometimes during their whole life-time. Results showed that the structures are produced around streaks of positive and negative velocities. Larger structures appear in different shapes. Most dominant ones have tube-like shape and aligned in the azimuthal direction of the cylinders. Since the measurements are time-resolved in a 3D volume, it is possible to track individual structures over time and observe evolution of their shapes. The large scale structures are found to be advancing despite the zero mean velocity.

 To reference this document use:

http://resolver.tudelft.nl/uuid:1eee503e-6a1d-422b-b8fb-28c96ed2385a

 Source

PIV13; 10th International Symposium on Particle Image Velocimetry, Delft, The Netherlands, July 1-3, 2013

 Part of collection

Institutional Repository

 Document type

conference paper

 Rights

(c)2013 Tokgoz, S., Elsinga, G.E., Westerweel, J.
Files
PDF A143_STokgoz.pdf 4.93 MB
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