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Search took 0.00 seconds. Search: Posts Made By: harrislcy
Forum: FLUENT November 18, 2009, 05:09
Replies: 30
Views: 22,234
Posted By harrislcy
error...

Error: divergence detected in AMG solver: temperature

Again, another error opup again when in the K-ep silmulation. This happen after 200 iterations. How to avoid this?Thanks
Forum: FLUENT November 16, 2009, 00:25
Replies: 30
Views: 22,234
Posted By harrislcy
What is this?

"turbulent viscosity limited to viscosity ratio of 1.000000e+005 in 2 cells "

What make this happen? Is it the meshing problem? How to solve it?
Forum: FLUENT November 11, 2009, 23:25
Replies: 30
Views: 22,234
Posted By harrislcy
"absolute pressure limited to 1.000000e+000 in...

"absolute pressure limited to 1.000000e+000 in 24668 cells on zone 2 "

When i simulate my model with k-epsilon, this sentence pop up, what is that meaning?how do i solve this so that i can use...
Forum: FLUENT November 10, 2009, 19:46
Replies: 30
Views: 22,234
Posted By harrislcy
ya, most of my simulation's wall Y+ are in range...

ya, most of my simulation's wall Y+ are in range 30-300.but still no able to get the good drag coefficient, 80% i think is to much, 10% is just acceptable.
Forum: FLUENT November 9, 2009, 22:55
Replies: 30
Views: 22,234
Posted By harrislcy
No good Result

Every suggestions for getting a better drag coefficient has been tried but regret to said that unable to get the better result for a greater aoa then 0 degree. Zero aoa are able to get the value...
Forum: FLUENT November 4, 2009, 08:47
Replies: 30
Views: 22,234
Posted By harrislcy
Ya, may be you are right, but how are we going to...

Ya, may be you are right, but how are we going to do with this situation? just using the laminar flow in the simulation? How about when deal with the high AoA, which model are we suppose to used?...
Forum: FLUENT November 3, 2009, 07:53
Replies: 30
Views: 22,234
Posted By harrislcy
Same result

Hi jack1980

I had did the way you told me, however i found that wall y+ for both simulations are in range 450 - 10. Is that acceptable range?

Even i used 2nd order up wind, the result is no...
Forum: FLUENT October 28, 2009, 12:02
Replies: 30
Views: 22,234
Posted By harrislcy
For 5 < y+ < 30 or y+ > 300 you might try redoing...

For 5 < y+ < 30 or y+ > 300 you might try redoing your mesh.May i know why?
Forum: FLUENT October 28, 2009, 09:12
Replies: 30
Views: 22,234
Posted By harrislcy
Comparison the airfoil 0012 experimental result and simulation result

Dear Fluent user,

Great to found this forum.
I have some doubt here, i have done the simulation for the NACA 0012 and NACA 4415 different AoA by using Fluent. With the airfoil chord length 1m, Re...
Showing results 1 to 9 of 9

 
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