Learning Forum

[Rashmikant]

Can anyone help me to do one-way and two-way FSI analysis using ANSYS workbench? I have already designed the 3-D structure using PATRAN. My 3-D structure has only surface and curves and no solid geometry. Is it difficult to do FSI analysis without solid geometry? 

Thank you for the help. 

[Lydia]

Hello Rashmi,

To perform an FSI analysis you must define both fluid and structure geometry. Structures in Ansys can be simulated with the use of Thin Structures modeled as Surface bodies. On the other hand, the fluid domain is typically modeled as a volume rather than a surface body. For example, if you are performing an external flow analysis you must create an enclosure around the structure to represent your fluid.

Therefore, if I understand your question correctly, it is possible to import your structure’s geometry that is modeled as a surface body, but afterwards you must create the fluid domain in Discovery or SpaceClaim.

 

[Rashmikant]

Hello Lydia,

Thank you for your reply. I designed my structure in the Patran software and imported that structure into the ANSYS workbench but creating the enclosure or fluid domain seems to be difficult. I am attaching the screenshot here. Could you please help me to create the fluid domain or enclosure? If I am trying to use an automatic method for external flow, it is showing some hints but I don't know the location of explore stage.

[Rashmikant]

Dear Lydia,

Thank you for your valuable reply. I have created the structure using PATRAN and imported the geometry but it seems difficult to create an enclosure or fluid domain in discovery. Could you please help me to create this and at the same time please help me to understand the explore stage?  I am attaching some files here. Thank you. 

 

[Lydia]

If you search online Ansys Discovery External Fluid flow, there are videos that demonstrate this matter. Also there are several threads regarding this matter here in this Forum.

Explore stage gives you quick insight by displaying results in real-time. Define a simulation, change the model or physics and results are updated immediately.

Also, if you are new in Ansys Discovery, you can have a look at this course it may help Solid Modeling - Ansys Discovery - ANSYS Innovation Courses

 

 

 

 

[Rashmikant]

Dear Lydia,

Thank you for your reply. Which geometry file can be imported? I have imported Parasolid xmt Files (*.x*t*) into the ANSYS workbench. 

[Lydia]

 

That must be fine. Please, have a look at my previous answer, I must have misunderstood your question. It’s edited now