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CFX multi grid method

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Old   November 23, 2022, 02:10
Default CFX multi grid method
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I have a few questions.

1) Is CFX using multigrid method? If yes how to enable it in CFX?

2)How can we change solver methodology change discretization schemes in CFX?

3) How to enable eularian or lagrangian approach?

where can I find solver control?


I am new to CFX
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Old   November 23, 2022, 04:23
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Glenn Horrocks
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Yes, CFX uses a multigrid method for the linear solver. It is already activated by default.

Assuming by "discretisation scheme" you mean advection, transient and diffusion scheme - yes, you can change these.

You cannot change the coupled solver approach, it is the only one available. So you cannot use SIMPLE or something like that.

The Eulerian and Lagrangian approaches are both available under multiphase models. Have a look at the multiphase tutorials for how to use them.
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Old   November 23, 2022, 20:12
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Quote:
Originally Posted by ghorrocks View Post
Yes, CFX uses a multigrid method for the linear solver. It is already activated by default.

Assuming by "discretisation scheme" you mean advection, transient and diffusion scheme - yes, you can change these.

You cannot change the coupled solver approach, it is the only one available. So you cannot use SIMPLE or something like that.

The Eulerian and Lagrangian approaches are both available under multiphase models. Have a look at the multiphase tutorials for how to use them.
Thank you, for the valuable inputs
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