Under Numerics you can set the equation solver for your simulation, change the convergence settings or choose the time integration scheme for transient dynamic simulations. These settings mainly influence the stability and efficiency of your simulation run, but also the quality of the results may depend on these settings.
In most cases the standard settings should be a good choice and should not be changed without reason.
However, all numerical setting are made available for users to have full control over the simulation. These settings are divided into three categories:
All properties regarding the iterative solvers of velocity and pressure equations are set here. Relaxation factors, residual controls, and solver-specific tweaks are among these settings. However, depending on the solver (e.g. PIMPLE, PISO, …), these settings will be adjusted. For each field, a Help message is provided on the platform.
In this part, linear solvers used in computing each variable could be chosen separately. Upon choosing a solver, a set of preconditioners/smoothers and their tolerances become available. To assist with selecting the best solver, a Help message is provided for each field.
These schemes determine how each term in the governing equations should be discretized. Schemes categorized in the following groups:
Generally, for Numerical Schemes the default selections are the best choice and require no changes.
Last updated: October 8th, 2020
Did this article solve your issue?
How can we do better?
We appreciate and value your feedback.
Strictly Necessary Cookies
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
If you disable this cookie, we will not be able to save your preferences. This means that every time you visit this website you will need to enable or disable cookies again.