changing under relaxation factor for energy in FLUENT

- January 13, 2020 at 5:46 am
  
  devaverma
  Subscriber
  
  My residuals for energy for a simple laminar translation periodic case was is going zig zag at .001. I tried changing mesh and mesh is hexa with .075 mm sizing. I changed all solution methods also. But no change. Then I changed under relaxation factor for energy to 0.95 and then the residuals starts decreasing.
  
  But when I again change to 1 the residual starts increasing. So i again reduced it to 0.95. Will my results be correct if I give 0.95 for energy ?
- January 13, 2020 at 5:49 am
  
  DrAmine
  Ansys Employee
  
  Actually for energy equation I won't reduce it at all or at least try to raise it again towrads the end.
  I recommend using coupled solver with pseudo transient option.
  
  If unsteady do not alter residuals