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Posts Made By:
RodriguezFatz
Forum:
FLUENT
October 22, 2012, 14:35
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
cfd seeker - I hope I didn't get you wrong: If...
cfd seeker - I hope I didn't get you wrong: If you know the Re number, what is the problem? It absolutely doesn't matter how you "replicate" the Re number, just the number has to be the same....
Forum:
FLUENT
October 18, 2012, 03:39
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
Hey, 2) With an y+ of that size: If you can...
Hey,
2) With an y+ of that size: If you can afford that mesh (by means of computational power) you can just use the "enhanced wall treatment" instead of wall functions.
4) I don't know much...
Forum:
FLUENT
October 17, 2012, 04:38
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
Just reduce your inlet velocity by a factor of 40...
Just reduce your inlet velocity by a factor of 40 and give it a try. If you don't have any problems then, you know that your grid needs some refinement for your current case. (Don't forget to enlarge...
Forum:
FLUENT
October 17, 2012, 04:23
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
Correct me if I'm wrong, but you say your plate...
Correct me if I'm wrong, but you say your plate has a length of 9.3m and velocity is 10m/s. In the paper the plate has a length of 0.1511m and velocity is 15.25m/s. Now, Reynolds number is 40 times...
Forum:
FLUENT
October 16, 2012, 07:44
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
3) y+ is always more or less important. ...
3)
y+ is always more or less important.
Normally, values (velocity, energy,...) have very strong gradients / changes near the wall. If you use a wall function, you imply that these values behave...
Forum:
FLUENT
October 15, 2012, 14:13
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
If you have ICEM, you should really use it. It is...
If you have ICEM, you should really use it. It is absolutely perfect for such simple geometries, since the basic structure of the blocks will be pretty simple, too.
If you don't know how to use it,...
Forum:
FLUENT
October 15, 2012, 11:51
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
Ok, TVR limitation starts to appear upstream the...
Ok, TVR limitation starts to appear upstream the plates' upper and lower ends. Maybe you could refine the grid there. I let the simulation run over night and will see what it shows tomorrow...
What...
Forum:
FLUENT
October 15, 2012, 11:04
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
I started a new Fluent project, imported your...
I started a new Fluent project, imported your mesh and used the settings you wrote. I don't see any TVR limitation after 6s. How long do I have to run the simulation?
At first glance your grid...
Forum:
FLUENT
October 15, 2012, 05:46
Replies:
80
Turbulent Boundary condition, viscosity ratio and length scale
Views:
14,893
Posted By
RodriguezFatz
Hi Bollonga, You say "sooner or later"... I...
Hi Bollonga,
You say "sooner or later"... I guess you mean regarding to time steps, is that correct?
Do you run a time dependent simulation? What is your time step?
When your TI decays on the...
Showing results 1 to 9 of 9
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