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sndong-mefane1-Visitor
1-Visitor
February 11, 2014
Question

External Analysis tutorials?

  • February 11, 2014
  • 2 replies
  • 7307 views

Hello,

I am looking for examples/tutorials of external analysis with softwares other than mathcad, as I have no clue on how to use that function of CREO2.0. my final goal is to create an external analysis using ANSYS CFX (no CFD in CREO SIMULATE...). any hint anyone???

Stephane

2 replies

P
ptc-38287311-Visitor
1-Visitor
February 11, 2014

Hello,

There is an opportunity to solve CFD problems with Creo.

Mentor Graphics is having tie-up with PTC.

Attached the demo guide (Demo version can be downloaded from M-G website).

For additional info:

http://www.mentor.com/products/mechanical/products/floefd/

http://www.youtube.com/watch?v=f9JhPUzzhZ0

Hope it may help you.

Shiva

S
sndong-mefane1-VisitorAuthor
1-Visitor
February 12, 2014

Thank you for your suggestion Shiva, I will take a look at the demo version.

But I am still looking for examples of "external Analysis" application, because in the end I am not the one deciding which CFD tool shall be used...Management does...Unfortunately.

D
dschenken1-Visitor
1-Visitor
February 12, 2014

"

With the External Analysis tool, you can create a customized analysis within Pro/ENGINEER to run commands that drive external software. The analysis provides five different steps in the following commands:

  • Setup—Defines preprocess relations.
  • Write—Writes parameters and dimensions to an external file.
  • Execute—Executes a command that drives an external application.
  • Read—Read parameters from an external file.
  • Post-Process—Post-processes relations.

You can save the external analysis as an Analysis Feature in BMX. Then you can use your external software to drive the geometry of your model."

From http://www.ptc.com/appserver/wcms/relnotes/note.jsp?&im_dbkey=50974&icg_dbkey=826

Looks like the user is on the hook for managing the way the analysis uses and returns values.

    S
    sndong-mefane1-VisitorAuthor
    1-Visitor
    February 25, 2014

    Hello,

    Some update on my problem. I made some progress with the external analysis module, and managed to do the following tasks "separately":

    1) generate an dimension input file (.txt) that ansys can read

    2) start ansys, read the input file, start the CFD calculation, and finally export the desired results (Pressure) into a .CSV file readeable by CREO external analysis module...everything using a script.

    3) Read the .CSV output file content with the "external analysis" module.

    In the second step, Ansys update the model dimensions by accessing CREO at some point, and it works perfectly if I update the .txt input file manually (meaning that the "external Analysis"(E.A) module is closed). But, if I start the script from E.A, Ansys will stay stucked at the model dimension update. I have then to stop the E.A module to keep the Ansys process alive, but this prevents me to reach step 3.

    remember that my goal is to make a feature which provides a pressure difference depending on the model dimension, and which can be used for optimization in CREO....Any idea on solving that problem???

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