Introduction to CFX-Day 1 Review and Tips

•Define your modeling goals

•Identify the computational domain

–Simplify if possible

–Think about where boundary conditions can be set

–Avoid placing boundaries in potential recirculation areas when possible

•Create / Import the Geometry

–Consider meshing requirements when creating the geometry

–Do not include unnecessary detail

•Create a suitable mesh

–Resolve expected gradients in the solution variables

–Check mesh quality metrics

Save your Project to set the working directory

•Create the workflow by dragging and dropping Analysis and Component Systems onto the Project Schematic

–Systems can share or transfer data by dropping onto an appropriate cell

•Configure Tools > Options to suit your needs

–E.g. Enable Named Selections
and blank the Filter to always
pass Named Selections from
the Geometry to the Mesh

Domains define a region of consistent materials and physical models

•Use different domains for:

–Different reference frames, e.g. rotating, stationary

–Different domain types – fluid, solid, porous

–Different materials, e.g. oil, copper and water

•Fluid domains that are connected should use consistent physics

•All regions that have the same physics can be grouped into a single domain

–Regions do not have to be connected

–Mesh does not have to be continuous

•The Reference Pressure should be set to the operating pressure of the device

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