Transient-Fluent

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  • Last Post 09 January 2019
hzeyad posted this 08 January 2019

I'm trying to simulate heat transfer in a pipe buried underground. The water flow is turbulent. I set the process as transient and use k-epsilon with enhanced wall function. I'm trying to view change in temperature over time. Using calculation activities then call register i create a file to save every 10 time steps. When I want to view the results it doesn't give the option of time step

Any idea what is missing?

 

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raul.raghav posted this 09 January 2019

So you need to define a expression for temperature (say, Tmin), and then define the expression as a variable (say, varTmin). Then you can Insert > Chart and follow the screenshots attached below.

         

 

        

Rahul

abenhadj posted this 09 January 2019

This step should be done as you setup the case where you can define report definition. If you have the data go to CFD-post read the last transient go to Chart select transient Chart and then expression write an expression of volume average of Temperature then apply

Best regards,

Amine

hzeyad posted this 09 January 2019

yes i have 4320 time steps i chose to save every 10 time steps now i want to plot temperature vs time step for all in one graph how can i get the temperature of all the time steps in one file?

 

thank u 

raul.raghav posted this 09 January 2019

Did you export the results as CFD-Post compatible files? In CFD-Post, you can choose the timestep you want or alternatively select the last timestep FFF-00xx.cdat file and use the timestep selector to view results at different timesteps.

Rahul

hzeyad posted this 09 January 2019

I have a separate file for each time step. How can I get the temperature vs time step in one file. I have 4320 time steps.

 

Thank you 

rwoolhou posted this 08 January 2019

Can you have a look in the location you're saving data to, that way we know it's been saved. Are you running inside Workbench?

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