JoshTheEngineer | Explained: Ghost Nodes [CFD] @JoshTheEngineer | Uploaded July 2013 | Updated October 2024, 1 hour ago.
In some finite difference/volume equations, you might need to use points that are outside of the actual grid domain. In these cases, ghost nodes can be calculated from the interior points and used for the differences (such as a central difference on a boundary node).
In some finite difference/volume equations, you might need to use points that are outside of the actual grid domain. In these cases, ghost nodes can be calculated from the interior points and used for the differences (such as a central difference on a boundary node).