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Forum: OpenFOAM Running, Solving & CFD

October 6, 2008, 11:10

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Thanks a lot David so k/C*rho

Thanks a lot David
so k/C*rho takes care of conduction, while nut/Prt accounts for turbulent convection, is that the way to understand this? I looked a little further into the compressible codes,...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2008, 16:43

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

I'm sorry, this is all new to

I'm sorry, this is all new to me, and it seems like I messed it up in the naming.
So taking a step backwards:
based on Fourier's law I would expect the coefficient in front of the laplacian to be...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2008, 12:11

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Hi Gavin thanks for your pati

Hi Gavin
thanks for your patience. I have one last question:
In one of the above links I picked up this expression for the heat transfer coefficient:
alphaEff=nut/Pr+k/(C*rho)
This seem...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2008, 09:45

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Hi Gavin Forgive my ignorance

Hi Gavin
Forgive my ignorance, but what is \sigma in the formula above? I actually ordered the book this morning, but I guess it won't arrive in a week or so.
Another question (also from a...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2008, 08:40

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Hi Gavin have you given any t

Hi Gavin
have you given any thought to the reason for the absence of the viscous heating term in the incompressible case? It seems to be fairly common to omit it in the compressible case (I can't...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2008, 12:50

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Yes, I think the viscous heati

Yes, I think the viscous heating is missing.
Based on http://ocw.mit.edu/NR/rdonlyres/Earth--Atmospheric--and-Planetary-Sciences/12-80 0Fall-2004/1CE85465-E605-4582-841B-24C3966E332A/0/energy.pdf...

Forum: OpenFOAM Running, Solving & CFD

September 17, 2008, 14:51

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Hi Thanks for your rapid repl

Hi
Thanks for your rapid reply. I have started adding a temperature transport to turbFoam (based on this thread: http://www.cfd-online.com/OpenFOAM_Discus/messages/1/60.html#POST6623). I figured...

Forum: OpenFOAM Running, Solving & CFD

September 17, 2008, 10:49

Replies: 25

Heat transfer in liquid water suggestions for chioce of solver

Views: 6,179

Posted By hkb

Hi all I'm new to OpenFOAM as

Hi all
I'm new to OpenFOAM as well as CFD, and would like to ask for some advice on how to choose solvers. I'm interested in thermal fatigue in pipes, and hence I would like to model thermal...

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