Abstract
We have studied a neutrally-stratified flow over two-dimensional hills using a two-dimensional, non-hydrostatic version of the Regional Atmospheric Modeling System (RAMS). We have implemented three different turbulence closure models: the standardE-ε model, an Algebraic Reynolds Stress Model (ARSM) and a new\(E-- \in --\overline {uw} \) model. Model predictions for the mean and turbulence flows using different closure schemes are compared with the data of a wind tunnel experiment containing isolated two-dimensional hills of varying slope. From the comparison, it is concluded that all three models predict the mean flow velocities equally well while only the new\(E-- \in --\overline {uw} \) closure model accurately predicts the turbulence data statistics.
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The research reported in this paper was conducted while the first author held a National Research Council (NRC) Associateship.
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Ying, R., Canuto, V.M. & Ypma, R.M. Numerical simulation of flow data over two-dimensional hills. Boundary-Layer Meteorol 70, 401–427 (1994). https://doi.org/10.1007/BF00713778
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DOI: https://doi.org/10.1007/BF00713778