Reply To: BCs for buoyant flow with outlet parallel to gravity vector

[Daniel Thomas]

Hi Ren,

Following up on this, with another question.  I ended up extending the domain in the y-direction to include the adjacent wall and sheath flow inlets, and repeated my mesh study to check the effect of refinement in the y-direction.  With a refined grid, I was able to see the expected slight upward shift in the flame with conditions of slow flow and exaggerated gravity.  Very nice to have that result -- and thank you for your help.

However, for flow rates corresponding to my experimental conditions, I am seeing peak temperatures almost 100 K higher than expected -- even with substantial grid refinement.  I'm solving the energy equation with volumetric reactions using an imported mechanism.  I've included the species transport inputs below.  I didn't find any tutorial exactly matching this.  Are you aware of any?  I'd be particularly interested in any that includes radiation for this gas-phase (no soot) flame.