Creating Transient CFX to Structural Issues

leeroy.jenkins · October 11, 2015, 01:07

Hi, I am fairly new to this forum and ANSYS structural. I am trying to run a transient solution where a shock wave propagates through a slowly diverging thin walled pipe.

My issue is that in CFX the fluid flow region is modeled as a solid. However, when I transfer the pressure data at the walls over to Stuctural using FSI, ANSYS assumes that the solid geometry that was the flow field is now a solid metal instead of a thin wall like I would like it to be.

Does anybody know how to manipulate the geometry or ANSYS to allow me to use the transient pressure data given from CFX to Structural? Or can anybody guide me on how to export this transient pressure data as an XML file to import for Stuctural?

Thank you!

fresty · October 12, 2015, 11:02

You may want to go through this and other parts of the same tutorial.. It seems fairly similar to what you're trying to do here..

https://www.youtube.com/watch?v=jNjYuw9mznA

leeroy.jenkins · October 13, 2015, 22:01

Thank you! Although it was pretty helpful, structural will only import one timestep at one part of my geometry.

All I care about is the strength of my wall at a certain point in my transient solution. If I have the pressure data on the wall, is there a way to export that data as an xml so I can use it as internal pressure in my structural solution?

October 11, 2015, 01:07	Creating Transient CFX to Structural Issues	#1
leeroy.jenkins New Member Nick Join Date: Oct 2015 Posts: 4 Rep Power: 10	Hi, I am fairly new to this forum and ANSYS structural. I am trying to run a transient solution where a shock wave propagates through a slowly diverging thin walled pipe. My issue is that in CFX the fluid flow region is modeled as a solid. However, when I transfer the pressure data at the walls over to Stuctural using FSI, ANSYS assumes that the solid geometry that was the flow field is now a solid metal instead of a thin wall like I would like it to be. Does anybody know how to manipulate the geometry or ANSYS to allow me to use the transient pressure data given from CFX to Structural? Or can anybody guide me on how to export this transient pressure data as an XML file to import for Stuctural? Thank you!

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October 12, 2015, 11:02		#2
fresty Senior Member Join Date: Aug 2014 Location: UK Posts: 213 Rep Power: 12	You may want to go through this and other parts of the same tutorial.. It seems fairly similar to what you're trying to do here.. https://www.youtube.com/watch?v=jNjYuw9mznA

October 13, 2015, 22:01		#3
leeroy.jenkins New Member Nick Join Date: Oct 2015 Posts: 4 Rep Power: 10	Thank you! Although it was pretty helpful, structural will only import one timestep at one part of my geometry. All I care about is the strength of my wall at a certain point in my transient solution. If I have the pressure data on the wall, is there a way to export that data as an xml so I can use it as internal pressure in my structural solution?