Previous: Big Decisions to Make Up: Big Decisions to Make Next: If RANS, wall functions? This is an automatically generated documentation by LaTeX2HTML utility. In case of any issue, please, contact us at info@cfdsupport.com. Transient or Steady-state? This is the first and perhaps the biggest decision in CFD.Steady-state simulation computes the fully developed solution that does not change in time.When steady-state used the mean values are computed.The steady-state simulation is the way faster than transient.Transient simulation computes the instantaneous values in each time for each quantity.Transient simulation has much higher requirements comparing to steady-state. The CPU time, disk storage, evaluating results, …The results of transient simulation may be more comprehensive. OpenFOAM Training by CFD Support, CFD SUPPORT, info@cfdsupport.com +420 212 243 883 © CFD support, s.r.o., Sokolovská 270/201, 190 00 Praha 9, Czech Republic