Implementation of a Lag Elliptic-Blending model for RANS equations in OpenFOAM
DOI:
https://doi.org/10.51560/ofj.v4.133Keywords:
turbulence, RANS, k-epsilon Lag EB, Backward Facing Step, Pipe bendAbstract
Turbulence modeling remains a significant challenge in Computational Fluid Dynamics. Achieving a balance between model accuracy and computational efficiency often leads to the widespread utilization of RANS (Reynolds Averaged Navier Stokes) turbulence models. The current study focuses on implementing the k−ε Lag Elliptic Blending turbulence model within OpenFOAM®. This extension of the conventional k−ε model introduces an elliptic equation to handle non-uniform behavior near walls and a transport equation to account for the lag between stress and strain tensors. Comparison of results from two benchmark cases with those obtained from the commercial software STAR-CCM+®, which also includes the model, reveals good agreement between the two codes. Consequently, the implementation can be considered verified.
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Copyright (c) 2024 Eleonora Gajetti, Luca Marocco, Gianluca Boccardo, Antonio Buffo, Laura Savoldi
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.