Journal
JOURNAL OF FLUID MECHANICS
Volume 409, Issue -, Pages 69-98Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0022112099007946
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Data on turbulent mixing and other turbulent-flow phenomena suggest that a (mixing) transition, originally documented to occur in shear layers, also occurs in jets, as well as in other flows and may be regarded as a universal phenomenon of turbulence. The resulting fully-developed turbulent flow requires an outer-scale Reynolds number of Re = U delta/nu greater than or similar to 1-2 x 10(4), or a Taylor Reynolds number of Re-T = mu' lambda(T) / nu greater than or similar to 100-140, to be sustained. A proposal based on the relative magnitude of dimensional spatial scales is offered to explain this behaviour.
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