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Search took 0.00 seconds. Search: Posts Made By: roi247
Forum: FLUENT March 16, 2016, 12:13
Replies: 22
Views: 4,854
Posted By roi247
Smile Hello Lucky Tran, I took you advice. I add...

Hello Lucky Tran,

I took you advice. I add perturbations 10% turbulent intensity at the inlet. However, what I got is almost the same as that of no perturbation. Total time steps gives a...
Forum: FLUENT March 13, 2016, 12:45
Replies: 22
Views: 4,854
Posted By roi247
It's an open channel which has the shape as a...

It's an open channel which has the shape as a rectangular. Maybe I should call it rectangular open channel flow. That's why I use free-slip wall boundary condition.(It's a flume in the experiment)
...
Forum: FLUENT March 13, 2016, 11:32
Replies: 22
Views: 4,854
Posted By roi247
Smile Hello LuckyTran My aim is to get the wall shear...

Hello LuckyTran
My aim is to get the wall shear on the wall for a turbulent flow.

It's a one phase rectangular channel case. The top wall is zero shear stress. The data here are cited from a...
Forum: FLUENT March 13, 2016, 10:32
Replies: 22
Views: 4,854
Posted By roi247
Smile Hi Lucky Tran, Thank you for your help, the...

Hi Lucky Tran,

Thank you for your help, the roughness has confused me for a long time.

I'm simulating a flow in a perspex flume which has a roughness coefficient of 0.009-0.010. Since I don't...
Forum: FLUENT March 9, 2016, 14:05
Replies: 22
Views: 4,854
Posted By roi247
Smile Hi Lucky Tran, Since you're here, May I ask...

Hi Lucky Tran,

Since you're here, May I ask why there is no roughness option in the LES.
In a one phase 3D simulation, if we don't specify what the material is. How can fluent know which...
Forum: FLUENT March 9, 2016, 13:35
Replies: 22
Views: 4,854
Posted By roi247
E sorry I don't know how to solve it. Maybe you...

E sorry I don't know how to solve it. Maybe you can try to search "data sampling" and "time statistics" Or ask again in the forum .

http://jullio.pe.kr/fluent6.1/help/html/ug/node471.htm...
Forum: FLUENT March 9, 2016, 13:23
Replies: 22
Views: 4,854
Posted By roi247
oh I understand now. sorry what I'm doing it...

oh I understand now. sorry what I'm doing it using excel to average it . Because I only have 15 files(groups of data to average). Actually, I don't need to do that, because I just wanted the value of...
Forum: FLUENT March 9, 2016, 13:04
Replies: 22
Views: 4,854
Posted By roi247
https://pbs.twimg.com/media/CdH_rfGWAAA50fs.jpg ...

https://pbs.twimg.com/media/CdH_rfGWAAA50fs.jpg
I can choose time step selector by clicking on the clock figure on the software.

The figure show above is a steady case, otherwise it should be a...
Forum: FLUENT March 9, 2016, 12:51
Replies: 22
Views: 4,854
Posted By roi247
Hi Pksri, I'm not familiar with Tecplot....

Hi Pksri,

I'm not familiar with Tecplot. I'll say something about how I did it in CFD-post ( Ansys workbench.)

I drew a line on the channel bottom and draw x-y plot. The line must be exactly on...
Forum: FLUENT March 7, 2016, 15:40
Replies: 22
Views: 4,854
Posted By roi247
Using LES simulating flow through a rectangular channel

Hello everybody!

I'm running LES to simulate a turbulent flow in a rectangular channel. Basically, there is a under estimation (prediction) of velocity magnitude close to the wall compared with...
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