- Title
- Characteristics of energy dissipation in a turbulent cylinder wake
- Creator
- Chen, J. G.; Zhou, Y.; Antonia, R. A.; Zhou, T. M.
- Relation
- 20th Australasian Fluid Mechanics Conference. Proceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016 (Perth, Australia 05-08 December, 2016)
- Relation
- http://www.afms.org.au/proceedings/20.html
- Publisher
- Australasian Fluid Mechanics Society
- Resource Type
- conference paper
- Date
- 2016
- Description
- This work aims to improve our understanding of the turbulent energy dissipation rate in the turbulent wake of a circular cylinder. Ten of the twelve components are simultaneously measured at nominally the same point across the wake with a vorticity probe which comprises 4 x-wires. A phase-averaged technique is applied to the energy dissipation rate estimation to examine the spatial topology of both the coherent (large-scale) and remaining (small-scale) components of the turbulent energy dissipation rate. It is found that the distribution of the energy dissipation occurs mostly within the spanwise vortex rollers, rather than in regions where turbulent mixing is important. This new information has been incorporated into Hussain and Hayakawa's [6] flow structure model in order to reflect the topological characteristics of the energy dissipation rate in the near/intermediate region of a plane wake.
- Subject
- energy dissipation; turbulent cylinder wake; phase-averaged technique; spanwise vortex rollers
- Identifier
- http://hdl.handle.net/1959.13/1458873
- Identifier
- uon:45528
- Identifier
- ISBN:9781740523776
- Language
- eng
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