import time varying pressure from fluent to transient structure

  • Last Post 27 May 2018
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Aya.hassan posted this 13 May 2018

Hello all,
I am trying to solve one way fluid structure interaction using fluent and transient structure. I shared the geometry between fluent and structure and transferred solution from fluent to the setup of transient structure. In fluent, I got in the results 1 second time varying pressure values. I can plot pressure at any time step.  In transient structure  (see image below) , pressure is imported from fluent solution (red rectangle) . In source time ( green rectangle) I can select only between first (0 sec) and last (1 sec) time but I want to solve at all time steps. What can I do ?

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raul.raghav posted this 17 May 2018

You can use the "External Data" module to transfer transient data from you CFD analysis to the transient structural model. In brief, you export the load data (in your case the pressure data) from CFD-Post as a ".csv" file. You do this for every timestep of your CFD analysis. Then you use the External Data module to import the created csv files and rearrange the data in the right order before loading it to the Transient Structural module.

Refer to the following the document and the attachments for more information on how to do that: 

Fluid-Structure Interaction (FSI) - One-Way Transfers Using System Coupling

PADTInc External Data Tool

Transient 1way FSI External Data Transfer


Attached Files

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Aya.hassan posted this 27 May 2018

Your reply is very helpful. The problem is fixed. 

Thank you.