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Forum: OpenFOAM Running, Solving & CFD

September 1, 2007, 05:40

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

Hey Cosimo, 1) whether visc

Hey Cosimo,

1) whether viscous heating is negligible is determined by the physics. A dimensional analysis should tell you. The way you implement it doesn't really matter.

2) look at...

Forum: OpenFOAM Running, Solving & CFD

July 31, 2007, 10:09

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

Hi Isabelle, yes, for gases

Hi Isabelle,

yes, for gases usually negligible.

regards
markus

Forum: OpenFOAM Running, Solving & CFD

July 17, 2007, 08:45

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

Hi Stefan, have a look here

Hi Stefan,

have a look here, might help
http://www.cfd-online.com/OpenFOAM_Discus/messages/1/104.html

regards
markus

Forum: OpenFOAM Running, Solving & CFD

June 13, 2006, 08:46

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

yep, looks good. I guess it i

yep, looks good.
I guess it is a good idea to replace 'tau && grad(U)' with 'div( phi/rho & tau ) - U & div(tau)' as you suggested

markus

Forum: OpenFOAM Running, Solving & CFD

June 8, 2006, 12:35

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

David, thanks for your remarks

David, thanks for your remarks.

to 1)
personally i won't do any reaction, so should be alright to assume the enthalpy of formation to be zero.

to 2)
i wasn't aware of that function,...

Forum: OpenFOAM Running, Solving & CFD

June 8, 2006, 06:22

Replies: 18

Full energy equation for enthalpy

Views: 18,530

Posted By hartinger

Hi, i've implemented the fu

Hi,

i've implemented the full energy equation for enthalpy without neglecting anything and put it into sonicLiquidFoam.

I would like to post it here to check whether i got the physics...

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