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-   -   Time-averaged velocity plot for a transient simulation (http://www.cfd-online.com/Forums/fluent/95855-time-averaged-velocity-plot-transient-simulation.html)

mali28 January 5, 2012 06:53

Time-averaged velocity plot for a transient simulation
 
Hi,

I want to plot a time-averaged cross-sectional velocity profile plot.

I can plot the velocity profile for a specific time, but how do can I plot time-averaged velocity profile for a specific range of time interval.

Can any one help me?

Thank you.

Amir January 5, 2012 08:36

Quote:

Originally Posted by mali28 (Post 337968)
Hi,

I want to plot a time-averaged cross-sectional velocity profile plot.

I can plot the velocity profile for a specific time, but how do can I plot time-averaged velocity profile for a specific range of time interval.

Can any one help me?

Thank you.

Hi,
I've done it but it's not very easy at least in ver. 6.3.
you can export your data and find the average flow in another software like MATLAB and then prepare it for fluent interpolation or showing in Tecplot.

Bests,

mali28 January 5, 2012 09:49

Quote:

Originally Posted by Amir (Post 337978)
Hi,
I've done it but it's not very easy at least in ver. 6.3.
you can export your data and find the average flow in another software like MATLAB and then prepare it for fluent interpolation or showing in Tecplot.

Bests,


I have version 12.1
So, I have to export the data for each time step and get an average value in other software like excel? That will be an extremely painstaking when the averaging interval is very large and time step size is very small as in my case.

:eek:

There must be some easy way of doing it in Fluent 12.1

:confused:

Far January 5, 2012 10:05

It is available in fluent

mali28 January 5, 2012 10:13

Quote:

Originally Posted by Far (Post 337991)
It is available in fluent

How can I do it? I could not find this feature in ver. 12 :confused:

Amir January 5, 2012 10:25

Quote:

Originally Posted by mali28 (Post 337989)
I have version 12.1
So, I have to export the data for each time step and get an average value in other software like excel? That will be an extremely painstaking when the averaging interval is very large and time step size is very small as in my case.

:eek:

There must be some easy way of doing it in Fluent 12.1

:confused:

I've done it by automation in both FLUENT and post processor. so it's not very complicated or time consuming.

Bests,

Amir January 5, 2012 10:45

I want to add another way if you haven't run your case yet.
you can also store your desired variables in temporary memory e.g. UDM and then find your average flow without using extra softwares (but I didn't use this procedure before). My previous suggestion is more proper for the cases with saved data in previous simulations.

Bests,

mali28 April 25, 2012 07:13

Quote:

Originally Posted by Amir (Post 338007)
I want to add another way if you haven't run your case yet.
you can also store your desired variables in temporary memory e.g. UDM and then find your average flow without using extra softwares (but I didn't use this procedure before). My previous suggestion is more proper for the cases with saved data in previous simulations.

Bests,

Thanks Amir, I found a UDF for computing the time average velocity profiles.

http://cape-forum.com/index.php/topic,1074.0.html


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