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Search: Posts Made By: Guava Wang
Forum: FLUENT January 5, 2013, 22:51
Replies: 10
Views: 12,292
Posted By Guava Wang
hi zigainer, about this questiong, what is...

hi zigainer,

about this questiong, what is your solution in the end? do you mind share your method with me? i have the same question with you, hope i can get some help from you. thank you.
Forum: FLUENT August 16, 2012, 23:26
Replies: 9
Views: 7,959
Posted By Guava Wang
Hi spk, with my experience, it's difficult to...

Hi spk,
with my experience, it's difficult to adapt y+ value to the range by remeshing. so you can solve it by using other type wall funciton equation and turbulent model, such as k-e turbulent...
Forum: FLUENT August 13, 2012, 03:46
Replies: 6
Views: 546
Posted By Guava Wang
To know the reason, you may check these in...

To know the reason, you may check these in sequence.
-pressure outlet is the same as you set.
-pressure drop between inlet and outlet is reasonable.
if this result is available, you then check...
Forum: Main CFD Forum July 12, 2012, 23:07
Replies: 8
Views: 696
Posted By Guava Wang
thanks. finally i adapt K-E model with scalable...

thanks. finally i adapt K-E model with scalable wall function, that can give good result.
Forum: Main CFD Forum July 4, 2012, 21:02
Replies: 8
Views: 696
Posted By Guava Wang
hi flotus1, viscosity is 2.24e-07 m^2 s^-1, and...

hi flotus1,
viscosity is 2.24e-07 m^2 s^-1, and i have check the Re number, which is larger than 2300 in the clearance.
I can't upload the model as a picture, maybe the problem didn't give a clear...
Forum: Main CFD Forum July 3, 2012, 22:56
Replies: 8
Views: 696
Posted By Guava Wang
hi FMDenaro, In the radial clearance, the...

hi FMDenaro,

In the radial clearance, the velocity is 30m/s, which is turbulent structure. now my main issue is how to adapt the mesh size in reasonable range to assure the calculation...
Forum: Main CFD Forum July 3, 2012, 02:08
Replies: 8
Views: 696
Posted By Guava Wang
micro scale calculation problem

Dear all,

Now my simulation model is that 10mm cyclinder with 20Ám little radial clearance. I want to calculate the fluid is through the clearance condition.

-which turbulent model and wall...
Forum: FLUENT May 31, 2012, 23:30
Replies: 2
Views: 807
Posted By Guava Wang
Hi,taylorfe. when you select coutours from the...

Hi,taylorfe. when you select coutours from the display type group box to open the contours dialog box, you can disable auto range, and input value by your mean. in that way, y-axis value can keep the...
Forum: FLUENT May 31, 2012, 04:25
Replies: 9
Views: 1,286
Posted By Guava Wang
you can do as follows. first divide the model...

you can do as follows. first divide the model into several parts, and then form a new part in ANSYS DM. the face amid two parts is an interior zone when you import model into FLUENT. that face is...
Forum: FLUENT May 30, 2012, 22:50
Replies: 9
Views: 1,286
Posted By Guava Wang
hi paisano, the porous model with 1mm thickness...

hi paisano,
the porous model with 1mm thickness can be simplified as a surface, and set the surface as porous jump boundary condition. in this way, mesh will be easy. the main issue is that the...
Forum: FLUENT May 29, 2012, 21:31
Replies: 5
Views: 693
Posted By Guava Wang
the outlet is given the velocity inlet boundary...

the outlet is given the velocity inlet boundary condition, and for the negative magnitude. hope that helps.

Best
Guava
Forum: Fluent UDF and Scheme Programming May 23, 2012, 21:55
Replies: 2
Views: 946
Posted By Guava Wang
Line 1 should be like that DEFINE_PROFILE...

Line 1 should be like that
DEFINE_PROFILE (mass_profile, t ,i)
there miss "," in this macro
Forum: STAR-CCM+ May 15, 2012, 01:12
Replies: 5
Views: 2,007
Posted By Guava Wang
hi,check heat flux 70 w/m2 and the related heat...

hi,check heat flux 70 w/m2 and the related heat exchange area. Confirm whether the magnitude is suitable.
Forum: FLUENT May 14, 2012, 23:43
Replies: 5
Views: 693
Posted By Guava Wang
that's good idea. thank you

that's good idea. thank you
Forum: FLUENT May 14, 2012, 03:43
Replies: 5
Views: 693
Posted By Guava Wang
how can i set this outlet boudary conditon?

Dear all,

for my case, the inlet pressure and mass flow is know, and my propositon is to get the pressure loss during the fluid flow. there are four outlets in this case.
how can i set...
Forum: FLUENT April 24, 2012, 22:43
Replies: 6
Views: 3,005
Posted By Guava Wang
Hi LuckyTran [QUOTE=LuckyTran;355915]This...

Hi LuckyTran

[QUOTE=LuckyTran;355915]This won't work well for a compressible flow.

As described, the flow in calculation region is imcompressible, but not a compressible flow.

The...
Forum: FLUENT April 20, 2012, 02:35
Replies: 41
Views: 9,850
Posted By Guava Wang
Hi mAx, would you please email your jou file for...

Hi mAx, would you please email your jou file for me?
wliu611@163.com

thanks!
Guava
Forum: Fluent UDF and Scheme Programming April 19, 2012, 02:57
Replies: 9
Views: 819
Posted By Guava Wang
As you described, you can make expansion region...

As you described, you can make expansion region both in inlet and outlet. according to supposeing model, BC set as belows:
-expansion inlet: pressure inlet 0
-expansion outlet: pressure outlet 0...
Forum: FLUENT April 19, 2012, 01:40
Replies: 6
Views: 3,005
Posted By Guava Wang
If you want to know the pressure loss in the...

If you want to know the pressure loss in the vessel, you can set BC like this:
velocity inlet /mass flow, pressure outlet.

Hope this helps.

Reds.
Guava
Forum: ANSYS Meshing & Geometry April 19, 2012, 01:12
Replies: 3
Views: 1,006
Posted By Guava Wang
the main mesh quality problem is mainly related...

the main mesh quality problem is mainly related to the model, please check your geometry first, and find the silver face,short edge,ect.
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