Sliding Mesh with interface

- December 9, 2019 at 12:53 pm
  
  S1d996
  Subscriber
  
  hie everyone
  
  I'm trying to do simulation of a rotating blade surrounded by circular discs (which move along with the blade) with sliding mesh technique in which i created an interface. here , i found the discs are moving apart from each other.i have attached the image. i tried using "mapped" interface, "coupled"interface. Please can anyone can tell me which type of interface can be used so that the discs doesn't get apart and move along with blade.
  
  Thanks in Advance
  
  Sid
- December 9, 2019 at 5:02 pm
  
  Rob
  Ansys Employee
  
  You need to look at the zone motion: some of it's moving relative to the coordinate system and some relative to another zone. It's nothing to do with the interface: you probably don't need to change anything from default there.
- December 10, 2019 at 6:46 am
  
  S1d996
  Subscriber
  
  ok...thanks for the reply and why it is showing the warning: incompatible interaction between moving mesh and dynamic mesh model detected! at every time step
- December 10, 2019 at 3:19 pm
  
  Rob
  Ansys Employee
  
  Are you using deforming mesh and sliding mesh?
- December 11, 2019 at 6:05 am
  
  S1d996
  Subscriber
  
  Yes. I'm using "Deforming" Dynamic Zone for the outer stationary fluid and the Rigid body Zone for the balde with Six DOF - ON and Rigid body Zone for Discs around the blade with Six DOF and Passive - ON
- December 11, 2019 at 4:42 pm
  
  Rob
  Ansys Employee
  
  Does the geometry move (ie does the shape change)? For most VAWTs you can use nested sliding zones.
- December 12, 2019 at 4:45 am
  
  S1d996
  Subscriber
  
  Thanks for the Responce rwoolhou
  
  The geometry is does'nt show any change in shape and Can u elaborate how to use nested sliding zones means?
- March 4, 2021 at 4:28 pm
  
  teoman
  Subscriber
  
  Hi everyonenI am having similar problem/warning which is described in the attached picture.Despite the warning ,Calculation has been completed and obtained realistic results.nBlades Control volumes and surrounding face of the rotor disc defined as Rigid Body in Dynamic Mesh.I checked Dynamic Mesh Preview , it is ok.nCertainly not having such warning will make me more happy.nThanks in advance for your kind help.nRegards nTeomannn
- March 4, 2021 at 4:53 pm
  
  Rob
  Ansys Employee
  
  Please can you re-post the image, staff are not permitted to open/download attachments. n
- March 5, 2021 at 9:34 am
  
  teoman
  Subscriber
  
  n
- March 5, 2021 at 1:21 pm
  
  Karthik R
  Administrator
  
  How did you define your dynamic mesh settings? Please post these screenshots in your comment. Also, the sliding mesh panel in Fluent.nAlso, what do you mean by applying Frame Motion? Are you simulating this using MRF? Or is this just another case you ran to test?nKarthikn

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