CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

How to plot the temperature Vs time in CFD-post?

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 23, 2015, 11:03
Default How to plot the temperature Vs time in CFD-post?
  #1
New Member
 
aicha
Join Date: Oct 2014
Posts: 24
Rep Power: 12
aicha is on a distinguished road
Hi all,
I'm using CFD-post in Ansys Workbench to process my results. I want to plot the temperature Vs time: temperature in Y-axis and time in X -axis. But there isn't the time in the X variable list.
How can I do it?
I would greatly appreciate your help
Thank you very much
aicha is offline   Reply With Quote

Old   April 25, 2015, 00:36
Default
  #2
New Member
 
Agung
Join Date: Mar 2015
Posts: 12
Rep Power: 11
agung123 is on a distinguished road
what kind of simulation did u do? transient or steady state?
agung123 is offline   Reply With Quote

Old   April 25, 2015, 07:38
Default
  #3
New Member
 
aicha
Join Date: Oct 2014
Posts: 24
Rep Power: 12
aicha is on a distinguished road
Hi agung123, thank you so much for reply.
Transient simulation.
aicha is offline   Reply With Quote

Old   April 25, 2015, 12:08
Default
  #4
Senior Member
 
Cees Haringa
Join Date: May 2013
Location: Delft
Posts: 607
Rep Power: 0
CeesH is on a distinguished road
That's because things are not stored over time by default. storing all data every timestep is a very data- and timeconsuming action, so if you want to do this you need to do this explicitly, and it is recommended only storing the things you are actually interested in.

If your mesh is small, and the number of timesteps not very large, you can get away with exporting all data. Store a datafile every so many timesteps, then you can import the whole series into CFD-post and manipulate them as desired. Check out the cornell university tutorial on transient flow past a sphere for more on this. For big meshes, or a more space-friendly manner in general, you can use one of the following options:

- if you need to store information about a certain parameter for each grid cell, use calculation activities > data export. Here you can store data every N timesteps too, for all cells you want, and only export the quantities you are interested in (such as only temperature). Select the data type of choice depending on which software package you plan to use, and also mind using node or cell data.

- if you are interested in an average, integral, sum or point value, use monitors. Set up a monitor with the quantity you want, enable the write option, and run. This is written as a text file and can be opened by any software package, from excel to Matlab or CFD-post. Note that using the monitor option, you never get a field: just a single scalar (integral, average, sum, min, max...) versus time.
CeesH is offline   Reply With Quote

Old   April 26, 2015, 12:24
Default
  #5
New Member
 
aicha
Join Date: Oct 2014
Posts: 24
Rep Power: 12
aicha is on a distinguished road
Hi Ceesh, thank you very much for reply.
I have stored the data at every time step: I have used calculation activities > Solution data export> I selected CFD-post compatible in file type and the variable is temperature but in CFD-post Ansys Workbenchin, there isn't the time in the X variable list.
aicha is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
[stressAnalysis] Residual plot for OpenFOAM-ext problem. Sargam05 OpenFOAM CC Toolkits for Fluid-Structure Interaction 26 July 14, 2014 09:36
Plot of user defined variable in CFD Post dreamz Main CFD Forum 0 December 8, 2013 23:00
IcoFoam parallel woes msrinath80 OpenFOAM Running, Solving & CFD 9 July 22, 2007 03:58
Plot temperature vs time for a defined point FREDERIK FLUENT 0 August 26, 2005 06:49


All times are GMT -4. The time now is 03:34.