On the significance of form-induced stress in rough wall turbulent boundary layers |
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| Authors: | Costantino Manes Dubravka Pokrajac Omduth Coceal Ian McEwan |
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| Institution: | (1) Department of Engineering, University of Aberdeen, Aberdeen, AB24 3UE, UK |
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| Abstract: | This paper presents a review of recent experimental and numerical studies which deal with the analysis of form-induced stress
in rough wall turbulent boundary layers. The aim of the paper is to assess the importance of this stress for various rough
wall geometries and flow conditions. Analysis of the significance of form-induced stress is first performed by comparing its
magnitude with the magnitude of Reynolds stress for each data set available in literature. Then, by selecting a special set
of data, we analyze the comparison between the gradients of both stresses. We point out that the comparison of stress gradients
gives a different perspective on the role of form-induced stress in rough wall boundary layers. |
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