Tips & Tricks

Auto Empty Folders option in CFD-GEOM

When importing large models into CFD-GEOM, you may notice that certain entities listed in the Model Manager may have a red box around them.

Adding Baffles to an Unstructured domain in CFD-GEOM

While meshing the geometries of industrial significance like mixing tanks, reactor and heat exchangers, we may encounter baffles which have negligible thickness but significant area to impact the physics of the problem in terms of momentum and heat transfer. These surfaces may be free-standing or connected to other surfaces from the domain.

Managing Multiple STAGE with Virtual Performance Solution (VPS)

This tip provides some information on the usage of multi stage runs in Virtual Performance Solution (VPS)

Using Inertial Relief

This tip provides some background information on how to model static cases without considering the effect of boundary conditions in Virtual Performance Solution (VPS)

Preloading BOLTS

This tip provides methodology to pre stress elements in Virtual Performance Solution (VPS) to model Bolt assemblies.

New Mesh Sources in CFD-GEOM for Triangle and Tetrahedral meshing

Corner Point Sources, Surface Interior Sources and Tet Sources have been available in CFD-GEOM for several years, allowing for refinements during certain phases of mesh generation.

Hints on the usage of linear Tetrahedron (TETR4 / ) elements

This tip provides some background information on the question, when, or when not, to use the linear tetrahedron (TETR4 / ) element in Virtual Performance Solution (VPS)

Why do total mass, sum of part masses and sum of nodal masses not match ?

This tip discusses the possible discrepancies in informations concerning total mass, part masses, nodal and element masses, given in the Virtual Performance Solution (VPS) output listing.

Which moments of inertia to use in added mass (MASS / ) cards ?

This tip discusses the choice of physically meaningful numbers to be used, when moments of inertia need to be specified in an added mass definition.

Some possible problems with CNTAC or TIED definitions

This tip discusses some of the reasons that might be responsible for problems with contact or tied definitions in a VPS simulation