Turbulence
ANSYS CFX offers a choice of more than 16 different turbulence models including the standard k-ε model, Second Moment Closure (SMC), Detached Eddy Simulation (DES) and Large-Eddy-Simulation (LES). The widely tested SST turbulence model available in CFX offers significant advantages for non-equilibrium turbulent boundary layer flows and heat transfer predictions. The SST model is as economical as the k-ε model, but offers much higher fidelity, especially for separated flows, providing excellent answers on a wide range of flows and near-wall mesh conditions.
Innovative Turbulence Modeling: The SST Model in ANSYS CFX
 |
ANSYS CFX computed the engine installation drag for this aircraft configuration using advanced turbulence modeling. This work was supported by research grants from the European Union under the FLOMANIA project and is part of the AIAA Drag Prediction Workshop. |
In addition, ANSYS CFX contains the first commercial implementation of a laminar to turbulence transition model. Using CFD to determine the transition location between laminar and turbulent flow is critical to improving efficiency and/or longevity of equipment in turbomachinery, aerospace, marine and many other industries.
Innovative Turbulance Modeling: A Transition Model