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Search: Posts Made By: Opaque
Forum: CFX February 22, 2019, 17:04
Replies: 8
Views: 513
Posted By Opaque
Recall the use of a "false timestep" approach is...

Recall the use of a "false timestep" approach is trying to approximate a transient solution (all the physics in sync among all equations).

A very small timestep would approach a transient...
Forum: CFX February 22, 2019, 12:45
Replies: 8
Views: 513
Posted By Opaque
For steady-state cases, the value of the timestep...

For steady-state cases, the value of the timestep has absolutely no influence on the results if the simulation is converged. Any dependence on the timestep is a defect and a bogus solution.
...
Forum: CFX February 22, 2019, 11:31
Replies: 8
Views: 513
Posted By Opaque
What happens if you change the timestep? Say...

What happens if you change the timestep?

Say increase it (which can make it unstable or converge bette), or decrease it (which may relax it a bit more)
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