Flow field error after overset grid initialization

- August 28, 2019 at 6:56 am
  
  shangjialin
  Subscriber
  
  Transient computation.The relative motion of the foreground grid and background grid is specified by udf. When t=0, the foreground grid and background grid are relatively stationary.However, after initialization, there is wrong vorticity at the junction of foreground grid and background grid.How to remove these vorticity?
- August 28, 2019 at 12:38 pm
  
  Rob
  Forum Moderator
  
  How did you initialise the model? Check the model for orphan cells too: I suspect you've got several given the relative cell sizes.
- August 28, 2019 at 12:48 pm
  
  shangjialin
  Subscriber
  
  I just clicked the initialization button. So Initialization method is default, based on cell volume. In addition, Fluent did not indicate the discovery of orphan cells.
- August 28, 2019 at 4:05 pm
  
  Rob
  Forum Moderator
  
  So you used hybrid initialisation? Try from the tree and select "from boundary". How does the velocity field look?