Q. I have run a steady state simulation using the SST model. I would like to know how I can get the values of the Reynolds Stresses. Is it possible to get the Reynolds Stresses through a steady state simulation using SST or do I have to run the simulation again as transient?
A. There is no implementation to obtain the Reynolds Stresses automatically at present. They will have to create expressions in CFX Post based on the effective viscosity and the velocity gradients. i.e the term is modelled by the eddy viscosity approximation so you can backout the components of the stress that way. You do not need to rerun as transient.
Alternatively, it may be of interest to run with a Reynolds Stress Model? This will then give the required stresses in each of the six directions, however, this will be more CPU and memory intensive.
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Q. I have run a steady state simulation using the SST model. I would like to know how I can get the values of the Reynolds Stresses. Is it possible to get the Reynolds Stresses through a steady state simulation using SST or do I have to run the simulation again as transient? A. There is no implementation to obtain the Reynolds Stresses automatically at present. They will have to create expressions in CFX Post based on the effective viscosity and the velocity gradients. i.e the term is modelled by the eddy viscosity approximation so you can backout the components of the stress that way. You do not need to rerun as transient. Alternatively, it may be of interest to run with a Reynolds Stress Model? This will then give the required stresses in each of the six directions, however, this will be more CPU and memory intensive. |
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