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water tank sloshing: warning ” coupled node set ..has unused node ….”

- March 22, 2020 at 5:25 am
  
  harsf
  Subscriber
  
  Hi,
  
  I am modelling water tank sloshing behaviour due to earthquake loading.
  
  I get warnings e.g " coupled node set 19 has unused nod 1430 ". i have attached the txt. file and some photos. can anyone help?
- March 23, 2020 at 4:05 pm
  
  Karthik Remella
  Administrator
  
  Hello,
  
  This warning message is saying that there is no element associated with the node. If your nodes are constrained properly, this error message should not matter. Please check your constraints.
  
  Since this is a structural mechanics question - I'm moving this to the appropriate thread in hope that the discussion here gets better visibility.
  
  Thank you.
  
  Best Regards,
  
  Karthik
- March 24, 2020 at 2:07 pm
  
  harsf
  Subscriber
  
  Thank you for the reply,
  
  those nodes belong to the coupled nodes at the fluid-solid interface at the left and right surfaces. i have applied a fixed support at the bottom surface of the tank only. i have used solid 186 and fluid 80 elemnts , i have no idea why this happens,, can you help?
- March 24, 2020 at 6:08 pm
  
  Wenlong
  Ansys Employee
  
  Hi,
  
  Can you please show the command snippet you are using?
  
  Regards,
  
  Wenlong
- March 25, 2020 at 2:26 am
  
  harsf
  Subscriber
  
  Hi
  
  i somehow managed to overcome this warning, but then water leakage occured. But here i am attaching the images of the command

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