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-   -   STL units and Surface elevation plot (http://www.cfd-online.com/Forums/flow-3d/27255-stl-units-surface-elevation-plot.html)

MAB October 20, 2008 09:45

STL units and Surface elevation plot
 
Hi, I have made my geometry in solid works using units mm( milimeter). Now when i load it into Flow-3D it shows the same unit values( Min/Max extents). But I want to work in SI units. Also how to plot Surface elevation against time. Thanks in advance.

HC October 20, 2008 10:43

Re: STL units and Surface elevation plot
 
To work in SI unit, you may expand that subcomponent's tree structure under the Meshing & Geometry tab and enter the value 0.001 in Transformation>Magnifications>Global.

To plot surface elevation against time, you may highlight Fluid surface height in the Selected data list under the Output tab in v9.2.1; or check Hydraulic data in the Special output field and highlight Hydraulic data in the Selected data list under the Output tab in v9.3.

Nikolaos October 20, 2008 10:45

Re: STL units and Surface elevation plot
 
Hi MAB,

As far as the units issue is concerned, try global magnification for the .stl subcomponent by 0.001 and you will be using m instead of mm. For the surface elevation, unfortunately, I don't have a clue.

Nikolaos

MAB October 20, 2008 10:46

Re: STL units and Surface elevation plot
 
Thanks HC! your hint towards magnification is smart. I have calculated the hydraulic data. But I am wondering how to plot surface elevation against whole time interval in the post processor. ??
:)

HC October 20, 2008 10:51

Re: STL units and Surface elevation plot
 
Select Analyze>Probe>Selected and you will see the variable in the list.

MAB October 20, 2008 11:32

Re: STL units and Surface elevation plot
 
Thanks I got it Now:)

MAB October 20, 2008 11:37

Re: STL units and Surface elevation plot
 
instead of Slected (DATA SOURCE) i have Restart option available. How I can make 'Selcted' option available. Thanks

HC October 20, 2008 11:41

Re: STL units and Surface elevation plot
 
To plot surface elevation against time, you may highlight Fluid surface height in the Selected data list under the Output tab in v9.2.1; or check Hydraulic data in the Special output field and highlight Hydraulic data in the Selected data list under the Output tab in v9.3.

The above has to be done before the simulation starts. Otherwise, you may not have the Selected option available.

After you get some simulation result, you may go to Analyze>Probe and choose the Selected option in the Data source field. Please also make the right result is loaded.

Q October 20, 2008 16:29

Re: STL units and Surface elevation plot
 
why not just scale the geometry model outside F3D?

salah October 21, 2008 02:00

fuel cell
 
i am undergraduat student i am doing project in using squer fuel cell or curved fuel cell is better to use i am using fluent 6.3.26 and gambit software any one can help

sameer10dulkar May 8, 2010 14:13

Quote:

Originally Posted by HC
;92776
To work in SI unit, you may expand that subcomponent's tree structure under the Meshing & Geometry tab and enter the value 0.001 in Transformation>Magnifications>Global.

To plot surface elevation against time, you may highlight Fluid surface height in the Selected data list under the Output tab in v9.2.1; or check Hydraulic data in the Special output field and highlight Hydraulic data in the Selected data list under the Output tab in v9.3.


Hi HC,

I am facing the same problem with scaling in flow 3d and I implemented the suggestion given by you (global magnification factor of 0.001). However when I do that, I am not able to get any simulation results. The simulation doesnot proceed at all. Its stuck at 0% (for more than an hour... )

Kindly give me more advice on the same.

Thanks.
-Sameer

sameer10dulkar May 9, 2010 15:55

I got it working now

Thanks

-Sameer


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