OpenFOAM guide/Transient

A problem whose solution varies with time. For these problems, time derivatives do not vanish:

$\frac{\partial \boldsymbol \Psi}{\partial t} \neq 0$

These problems are parabolic in nature, in that a change a time derivative has no effect on the solution at that timestep. Therefore they may be solved explicitly.

• 2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Facebook. The activation will transmit data to third parties – see i.not connected to Facebook
  
• 2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Twitter. The activation will transmit data to third parties – see i.nicht mit Twitter verbunden
  
• 2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Google+. The activation will transmit data to third parties – see i.nicht mit Google+ verbunden
  
• If you activate one of these fields data will be sent to and stored by Facebook, Twitter or Google. For further information click on the i (use the translation service of your choice).Einstellungen

  Agree to permanently activate the data transmission to:

  FacebookTwitterGoogle+