Plotting Temperature Vs Time for Transient Simulation

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  • Last Post 14 March 2019
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colintho posted this 26 February 2019

Good Evening,

 

I am trying to plot a graph of temperature against time for a point within a room that its temperature is being cooled over a 30min period.

I tried to plot this in the results section CFD-Post by doing the following:

•Insert>>Location>>Point

•Insert>>Chart

•Set as Transient

•X-axis set as time

•Y-axis set as temperature.

 

However when I plot this I get the following graph with only two data points when I actually ran the simulation for 1800 time steps! How do I get it to plot for all time steps rather than start and end temperature?

Plot

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colintho posted this 14 March 2019

Just to feedback on this one in CFD Post this worked:

 •Insert>>Location>>Point

•Insert>>Chart

•Set as Transient

•X-axis set as time

•Y-axis set as temperature.

 

My issue was that I wasn't telling the calculation to auto save at however many time steps inside solution! Thanks

rwoolhou posted this 27 February 2019

You can extract the data in CFD Post if you've saved all of the data sets. Not sure how you'd create the line plot of point data v time though. 

If you set this up in Fluent (just use a point monitor) and export the data to a file (read up on Report Definitions) before the run you can save out T v t on many points and plot later on. 

colintho posted this 27 February 2019

Hey Kkande,

Thanks for your reply, so I need to do this before running the simulation? Does that mean I must make a point in Fluent rather then add one in CFD Post?

Thanks

Colin

kkanade posted this 27 February 2019

before runnning in fluent, please set calculation activity. 

file - export - during calculation - solution data

set cfdpost for export. 

set frequency. 

if this helps you, please mark this post as 'is solution' to help others on forum.

 

 

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