Volume 48, Number 1, October I 1999
|Page(s)||43 - 48|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 September 2002|
Reynolds number dependence of low-order turbulent temperature structure functions
Department of Mechanical Engineering University of Newcastle - N.S.W., 2308, Australia
Accepted: 8 August 1999
The behaviour of low-order moments of the temperature increment is considered, for both a range of flows and of the Taylor microscale Reynolds number . The focus is on values of the separation r which are either large compared to the integral length scale or lie within the inertial range. In the former case, the dependence on appears to be reasonably well predicted, provided the velocity/temperature time scale ratio is taken into account. In the latter case, the prediction, based on local isotropy, appears to be approached only at sufficiently large .
PACS: 47.15.Gf – Low-Reynolds-number (creeping) flows
© EDP Sciences, 1999
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