Influence of the turbulence model in calculations of flow over obstacles with second - moment closures.

This paper investigates the role of turbulence models in numerical calculations of flow over obstacles with second-moment closure models. Two models for the pressure-strain correlations are examined in the study. Computations of the main characteristics of the mean flow and the turbulent fields are compared against experimental data, and results obtained with the standard k-e model. All models give reasonable agreement with the data. In the limited region in which comparisons were made, the k-e model gives the best agreement with mean flow data, and the LRR model gives better agreement with Reynolds stress data.