confirming energy/momentum conservation

Hi,

In principle, energy and momentum is conserved in cfd calculation through the Navier Stokes equations. Is there a way to verify that energy and momentum is actually conserved in a calculation?

Thanks.

Primer

OS: Fedora Linux 37 (MATE-Compiz) (MATE/mate)
Word size of FreeCAD: 64-bit
Version: 0.20.2.Unknown
Build type: Unknown
Python 3.11.1, Qt 5.15.8, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.3
Locale: English/United States (en_US)
Installed mods: 
  * Plot 2022.4.17
  * FeedsAndSpeeds 0.5.0
  * Help 1.0.3
  * CfdOF 1.24.5