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Search took 0.00 seconds. Search: Posts Made By: vwibaut
Forum: OpenFOAM Running, Solving & CFD March 28, 2013, 01:59
Replies: 64
Views: 18,656
Posted By vwibaut
No I don't know any keyword to do that. I don't...

No I don't know any keyword to do that. I don't use the janaf coefficients because the temperatures of my application are out of the range of temperatures possible with janaf.
Forum: OpenFOAM Running, Solving & CFD March 13, 2013, 10:04
Replies: 64
Views: 18,656
Posted By vwibaut
I use the values in the janaf file and make as...

I use the values in the janaf file and make as you tell. (coeff = coeff N2 * 0.75 + coeff02 * 0.25)
Just a remark, I think that there is AIR in the janaf file so you haven't to calculate the...
Forum: OpenFOAM Running, Solving & CFD March 11, 2013, 05:00
Replies: 64
Views: 18,656
Posted By vwibaut
my coefficients

highCpCoeffs (3.129672277499967 1.211766752750042e-3 -4.04761109000018e-7 6.409571300000324e-11 -3.780447620000211e-15 -996.9558 5.2577564125);
lowCpCoeffs (3.593868050000014...
Forum: OpenFOAM Running, Solving & CFD March 8, 2013, 04:35
Replies: 64
Views: 18,656
Posted By vwibaut
hi, Sorry, I work in dual boot and the most...

hi,

Sorry, I work in dual boot and the most of the time I can't access to matlab (and so to the coefficients you need). I will give you the coefficients as quickly as possible.
Forum: OpenFOAM Running, Solving & CFD February 24, 2013, 13:43
Replies: 64
Views: 18,656
Posted By vwibaut
Yes I'm sure for the value of the temperature,...

Yes I'm sure for the value of the temperature, it's the analytical solution :) Ok so I have to create a new janafthermo wich interpolate the cp when the temperature is <200K.

For the values, I...
Forum: OpenFOAM Running, Solving & CFD February 24, 2013, 12:52
Replies: 64
Views: 18,656
Posted By vwibaut
I have an other question. My goal is to...

I have an other question.
My goal is to simulate the flow in a nozzle, and I would like to take into account the variation of the cp with the temperature altough I think this variation is very...
Forum: OpenFOAM Running, Solving & CFD February 24, 2013, 08:26
Replies: 64
Views: 18,656
Posted By vwibaut
Thanks for your help ;) I confirm that you use...

Thanks for your help ;)
I confirm that you use 0.75 N2 and 0.25 O2

But I have some different values and I don't find the error. I take the coefficient for O2 and N2 in the janaf table...
Forum: OpenFOAM Running, Solving & CFD February 24, 2013, 05:13
Replies: 64
Views: 18,656
Posted By vwibaut
Thank you very much ehsan :) I have a...

Thank you very much ehsan :)

I have a question: why do you use N2 75% and O2 25%? Air has approximately 79% N2 and 21% O2.

How do you find the coefficients with matlab?
Forum: OpenFOAM Running, Solving & CFD February 22, 2013, 16:55
Replies: 64
Views: 18,656
Posted By vwibaut
I would like to have more informations about the...

I would like to have more informations about the coefficients. Can I have your thermoPhysicalProperties file? To see how you write this

If you have more explanations about this, I'm also...
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