Learning Forum

[donmohsen]

Hello the community I have found that for implementing user defined anisotropic turbulent heat flux closure you can do it by editing ccl file like below:
CFX 2021,R2
--------------------
FLOW:
DOMAIN: Domain 1
FLUID MODELS:
HEAT TRANSFER MODEL:
Option = Thermal Energy
TURBULENT FLUX CLOSURE:
Option = User Defined
uh = 1. [m^3 s^-3]
vh = 2. [m^3 s^-3]
wh = 3. [m^3 s^-3]
END
END
END
END
END
-------------------------------

But when i run this ccl, it says there is no 'user defined' option available.
Can somebody help me please??
By the Way I wanted to Implement algebraic turbulent heat flux equation in CFX. I would be happy for any help.
Thanks

[Surya Deb]

Hello, 

What is the turbulence model that you are using? Are you using SSG Reynolds Stress model?

Anisotropic diffusion is not available for all turbulence models.

Regards,

SD

[rfblumen]

The CCL that you're referring to was a beta feature in CFX-5.7 (2004).  A lot has changed in the software since then and this beta feature is no longer available.