Abstract
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.
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.
| Original language | English |
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| Title of host publication | Proceedings of the 20th Australasian Fluid Mechanics Conference |
| Editors | Greg Ivey, Nicole Jones, Tongming Zhou |
| Publisher | University of Melbourne |
| ISBN (Electronic) | 978-1-74052-377-6 |
| Publication status | Published - 2016 |
| Event | 20th Australasian Fluid Mechanics Conference - University of Western Australia, Perth, Australia Duration: 5 Dec 2016 → 8 Dec 2016 Conference number: 20 http://www.afms.org.au/20AFMC/ |
Publication series
| Name | Proceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016 |
|---|
Conference
| Conference | 20th Australasian Fluid Mechanics Conference |
|---|---|
| Abbreviated title | AFMC |
| Country/Territory | Australia |
| City | Perth |
| Period | 5/12/16 → 8/12/16 |
| Internet address |