Journal article
Towards reconciling the large-scale structure of turbulent boundary layers in the atmosphere and laboratory
N Hutchins, K Chauhan, I Marusic, J Monty, J Klewicki
Boundary Layer Meteorology | Published : 2012
Abstract
A collaborative experimental effort employing the minimally perturbed atmospheric surface-layer flow over the salt playa of western Utah has enabled us to map coherence in turbulent boundary layers at very high Reynolds numbers, Reτ ∼ O(106). It is found that the large-scale coherence noted in the logarithmic region of laboratory-scale boundary layers are also present in the very high Reynolds number atmospheric surface layer (ASL). In the ASL these features tend to scale on outer variables (approaching the kilometre scale in the streamwise direction for the present study). The mean statistics and two-point correlation map show that the surface layer under neutrally buoyant conditions behave..
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Funding Acknowledgements
The authors gratefully acknowledge support from the National Science Foundation, the David and Lucile Packard Foundation, the Office of Naval Research and the Australian Research Council. The SLTEST measurements in 2005 were a collaborative effort involving a large team from several universities. Specifically we acknowledge the support of staff at the Dugway Proving Ground (in particular Donny Storwold), Ed. Swiatek from Campbell Scientific, Keith McNaughton and Rob Clement of the University of Edinburgh and Todd Novak of the University of Minnesota.