[Jack001]

Hello,

I am running CFX v16.0 and I wish to run a transient simulation using DDES/SAS/LES models. I am setting my case up with the help of CFX pre Turbo Mode. However when I select the transient option in the wizard, the only Turbulence options I have to choose from are k-epsilon and Shear Stress Transport options. Looking at the guide for CFX pre there should be a range of options available:

12.4.2.3.2. Turbulence: Option

You can select one of the following turbulence models:

None (Laminar): Turbulence is not modeled. This should only be used for laminar flow. Of the combustion models, only Finite Rate Chemistry is available for laminar flow. For details, see The Laminar Model in the CFX-Solver Modeling Guide.

k-Epsilon: A standard fluid model that is suitable for a wide range of simulations. For details, see The k-epsilon Model in the CFX-Solver Modeling Guide.

Fluid Dependent: Allows you to set different turbulence models for each fluid in the domain. If this option is selected, the turbulence model for each fluid is set in the Fluid Specific Models tab. This is only available for multiphase simulations when Homogeneous Model is not selected.

Shear Stress Transport: Recommended for accurate boundary layer simulations. For details, see The k-omega and SST Models in the CFX-Solver Modeling Guide.

Omega Reynolds Stress / BSL Reynolds Stress: For details, see Omega-Based Reynolds Stress Models in the CFX-Solver Modeling Guide.

QI / SSG / LRR Reynolds Stress: Provides high accuracy for some complex flows. For details, see Reynolds Stress Turbulence Models in the CFX-Solver Theory Guide.

Zero Equation: Only the Finite Rate Chemistry combustion model is available when using the zero equation turbulence model. For details, see The Zero Equation Model in the CFX-Solver Modeling Guide.

RNG k-Epsilon: A variation of the k-epsilon model.

k-Omega / BSL: The SST model is often preferred to this model.

k epsilon EARSM / BSL EARSM: These models are a simplified version of the Reynolds stress models with application to problems with secondary flows as well as flows with streamline curvature and/or system rotation. For details, see Explicit Algebraic Reynolds Stress Model in the CFX-Solver Theory Guide

LES Smagorinsky / LES WALE / LES Dynamic Model: Available for transient simulation only. For details, see The Large Eddy Simulation Model (LES) in the CFX-Solver Modeling Guide.

Detached Eddy Simulation: Available for transient simulation only. For details, see The Detached Eddy Simulation Model (DES) in the CFX-Solver Modeling Guide.

SAS SST: Available for transient simulation only. For details see, The Scale-Adaptive Simulation (SAS) in the CFX-Solver Modeling Guide.

Eddy Viscosity Transport Equation: A one-equation variation of the k-epsilon model. For details, see The Eddy Viscosity Transport Model in the CFX-Solver Theory Guide.

Any ideas how to enable these models?