Fluids

Fluids

Multi profile wing layer thickness

    • Federico2594
      Subscriber
      Hi,nI have a question regard to first layer thickness of multiprofile wing.nFor what about y+ value for turbulence model is everything is clear but, if I have a wing composed by 3 Naca Profiles for example, the inflation layer value (first layer thick) is different for every profile related to single profile chord? (or is only one related to wing chord?)nRegards,nFedericon
    • Rob
      Ansys Employee
      The y+ value is assigned prior to meshing, however it's also a function of velocity and cell height which is why it's used to estimate the near wall cell height. You then run the solver where it's calculated, and can amend the mesh to suit. It's defined in the User's Guide, and is used very badly by most people explaining meshing. You do need to resolve the near wall cell, but also the flow boundary layer AND far field flow gradients. Getting y+ in the recommended limits just means you got one layer of cells in the right place..... n
Viewing 1 reply thread
  • You must be logged in to reply to this topic.