The periodic viscous sublayer in turbulent flow
1970; Wiley; Volume: 16; Issue: 5 Linguagem: Inglês
10.1002/aic.690160525
ISSN1547-5905
Autores Tópico(s)Combustion and flame dynamics
ResumoAbstract The model of the fluctuating viscous sublayer proposed by Einstein and Li was modified by treating some of the objections to the original formulation without greatly altering the essential simplicity of the concept. The applicability of this model to the description of the important features of turbulent flow and heat transfer in ducts and of the Toms phenomenon was evaluated by comparison of predictions of the model with experimental measurements. The mean period for growth and decay of the sublayer and the magnitudes of the wall‐pressure fluctuations and wall‐temperature fluctuations were compared for the flow of air and liquids. Quantitative spatial features of the periodic sublayer, that is, minimum and maximum sublayer thickness and patch size in the directions normal and parallel to the flow direction, were determined.
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