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Forum: OpenFOAM Running, Solving & CFD October 17, 2005, 04:17
Replies: 33
Views: 5,512
Posted By grtabor
Quite a lot of info about an L

Quite a lot of info about an LES version of Henry's combustion model is given in a paper in Flow, Turbulence and Combustion :

Large Eddy Simulation of Premixed Turbulent Combustion Using Xgr...
Forum: OpenFOAM Running, Solving & CFD September 2, 2005, 09:32
Replies: 33
Views: 5,512
Posted By grtabor
One further query.... how does

One further query.... how does one read a label (int) from a dictionary? I do seem to remember that there was a need for something like readLabel(), but I can't find the details.

Thanks
...
Forum: OpenFOAM Running, Solving & CFD September 1, 2005, 12:11
Replies: 33
Views: 5,512
Posted By grtabor
OK - a _really_ simple questio

OK - a _really_ simple question this time.

I need to get the current time from the runTime database. How do I do that? I've found a function timeOutputValue() which claims to give the current...
Forum: OpenFOAM Running, Solving & CFD September 1, 2005, 11:40
Replies: 33
Views: 5,512
Posted By grtabor
That sounds feasible/sensible.

That sounds feasible/sensible.

Your use of language suggests that there might be another way of doing this - is there? The only other option that I can think of would be to initialise the...
Forum: OpenFOAM Running, Solving & CFD September 1, 2005, 10:00
Replies: 33
Views: 5,512
Posted By grtabor
Niklas : just tried doing btil

Niklas : just tried doing btilde.max(0). Now btilde is always 0 or greater - but I still get the same error on the second timestep.

Ho hum.

Gavin
Forum: OpenFOAM Running, Solving & CFD September 1, 2005, 09:56
Replies: 33
Views: 5,512
Posted By grtabor
Henry : >It looks like you

Henry :

>It looks like you are violating thermodynamic >constraints. Are you saying ctilda goes from 0 to 1 >in 1 timestep? With ctilde being chiefly around 1 >after the first timestep you now...
Forum: OpenFOAM Running, Solving & CFD September 1, 2005, 09:21
Replies: 33
Views: 5,512
Posted By grtabor
Further (slow) progress...

Further (slow) progress...

I've modified the omegaDot (source) term so that the first timestep remains bounded - ctilde now lies between 0 and 1 (chiefly around 1) and btilde between 1 and 0 (to...
Forum: OpenFOAM Running, Solving & CFD August 31, 2005, 12:04
Replies: 33
Views: 5,512
Posted By grtabor
Just tried running without ome

Just tried running without omegaDot - it does indeed remain bounded, although there do seem to be problems beyond that. I will investigate this in more detail.

Gavin
Forum: OpenFOAM Running, Solving & CFD August 30, 2005, 12:16
Replies: 33
Views: 5,512
Posted By grtabor
OK, good to know that. I am

OK, good to know that.

I am experiencing problems with bounding the progress variable though. I'm trying to compute a backward-facing step; I've done a precomputation using turbFoam and have...
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