Generalized Wall Functions for Rough Walls Based on Data Assimilation |
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Authors: | B. Mohammadi G. Puigt |
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Affiliation: | Mathematics Department , University of Montpellier II , CC. 51-34095, Montpellier Cedex, France |
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Abstract: | We present a systematic identification method for the development of equivalent boundary conditions for turbulent flow simulation over rough walls in engineering applications where the typical roughness involved is known for a given application. After parameterizing the roughness and sampling of the parameter space, numerical simulations or experiences are used to generate a database which is used to identify the coefficients of a polynomial reduced-order model. These laws are parameterized by an a priori length scale for which we propose a new a posteriori criterion. |
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Keywords: | Wall Functions Rough Walls Turbulent Flows |
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