期刊
JOURNAL OF FLUID MECHANICS
卷 781, 期 -, 页码 166-195出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2015.493
关键词
turbulence simulation; turbulence theory; wakes
资金
- ERC Advanced Grant
- EC [RI-312763]
- EPSRC [EP/L000261/1]
- PRACE
- EPSRC [EP/L000261/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L000261/1] Funding Source: researchfish
We present a combined direct numerical simulation and hot-wire anemometry study of an axisymmetric turbulent wake. The data lead to a revised theory of axisymmetric turbulent wakes which relies on the mean streamwise momentum and turbulent kinetic energy equations, self-similarity of the mean flow, turbulent kinetic energy, Reynolds shear stress and turbulent dissipation profiles, non-equilibrium dissipation scalings and an assumption of constant anisotropy. This theory is supported by the present data up to a distance of 100 times the wake generator's size, which is as far as these data extend.
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