Squeeze a 3D cylinder

- March 29, 2023 at 2:49 pm
  
  Seyyed Mahmoud Mousavi
  Subscriber
  
  Hi!
  My initial geometry in Fluent is a cylinder with a length of L = 40mm and an R = 2mm cross-sectional radius. I need to deform the cylinder radius (1mm < R < 3mm) in time in my transient simulation in Fluent (squeeze or outstretch the cylinder).
  Could anyone please help me with this? Please don't simply say to use a udf; I have searched for it but still couldn't get/find a similar udf file so I can modify it to fit my purpose; please be more specific in your answer like which functions I should use in the udf.
  
  Thanks!
- March 29, 2023 at 3:21 pm
  
  Rob
  Ansys Employee
  
  Start here, https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/flu_udf/flu_udf_DynamicMeshDEFINE.html Which macro do you think would be best?
  - March 29, 2023 at 5:58 pm
    
    Seyyed Mahmoud Mousavi
    Subscriber
    
    Dear Rob!
    The link is directing me to the customer portal page and asks me to register there. I don't have, however, Account Number(Customer Number), to register there. What can I do? I have the Fluent user manuals pdf or UDF manual pdf (2022 R2). Are you trying to refer to me in those pdf files? Can I ask which section of those files?
    
    Thank you!
- March 30, 2023 at 2:19 pm
  
  Rob
  Ansys Employee
  
  If you click on Help in the solver you'll get a browser up. Then copy the link into that browser. The solver adds a cookie/token/biscuit to bypass the log in process.

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