A Two-Equation Turbulence Model Combining Eddy Viscosity and Turbulent Kinetic Energy

A new two-equation turbulence model, designed to track the decay of turbulent kinetic energy and be compatible with finite element solvers, is calibrated and evaluated. The proposed model is governed by turbulent kinetic energy and scaled by eddy viscosity. The scaling equation is the same as the governing equation for the Spalart-Allmaras (SA) model, with the addition of a destruction term. Two-equation turbulence models exhibit numerical stiffness in finite element solvers, particularly in free-stream flow. Coupling the numerical robustness of the SA model with a two-equation turbulence model aims to improve performance in these regions. The model is calibrated in a hierarchal fashion, similar to the SA model. The time constant rate of turbulent decay of the