Gradient Discretization CFX vs Fluent
I am a traditional Fluent user trying to compare CFX runs to Fluent runs.
A few versions ago Fluent added an option under discretization for gradients
1) Green-Gauss Node based
2) Green-Gauss Cell based
3) Least Squares Cell based
I am having trouble finding help on 1) does CFX have similar options 2) what is CFXs default
If a simple answer exists (i.e. CFX only does #2 from the list above) that would be great.
Thanks in advance
The approach in CFX is totally different to Fluent. Fluent is cell-centred so the gradients need to be calculated at the cell boundaries and hence the options you list. CFX uses a semi-Finite Element approach with shape functions. See the theory manual in the documentation for more details.
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