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Toward the development of a predictive model of the roughness sublayer flow

Blackman, Karin and Perret, Laurent and Mathis, Romain Toward the development of a predictive model of the roughness sublayer flow. (2019) In: 11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), 30 July 2019 - 2 August 2019 (Southampton, United Kingdom).

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Abstract

The non-linear interactions between large-scale momentum regions and small-scale structures induced by the presence of the roughness have been studied in boundary layers consisting of staggered cube arrays with plan area packing density of 6.25%, 25% or 44.4%. The measurements, consisting of hot-wire anemometry, were conducted at two Reynolds numbers in each of the canopy configurations. The canopy configuration is shown to have a significant influence on all parameters of the predictive model close to the roughness elements which is a result of the characteristics of the small-scale structures induced by the presence of the cubes. Several tests of the predictive model have been undertaken, demonstrating the good capability of the model to reproduce accurately spectra and statistics up to the 4th order. The model must be however calibrated for each type of canopy flow regime.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02364043
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Centrale de Nantes (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Funders:
Agence Nationale pour la Recherche
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Deposited On:14 Nov 2019 15:43

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