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# incompressible
  • s
    In a usual wing we'd have the root connected to a feusalage
  • s
    in 2d at 5 degrees you would usually expect a cl of 0.5
  • s
    not likely
  • s
    Yeah I was expecting a bit lower at around 0.3 due to low aspect ratio and 3d but 0.15 is too low I feel like
  • s
    Just curious aswell
  • s
    What does symmetryPlane do if I put it on the wall next to the root chord
  • s
    your aspect ratio is basically 3
  • s
    And like connect the root chord to the wall
  • s
    Mhmmmm
  • s
    you could try that and test it out
  • s
    maybe thatll be the problem
  • s
    but remember also that the decrease in CL between 2d and 3d scales with your aspect ratio
  • s
    last time i was designing a wing, the airfoil had supposedly a cl of 1 in 2d
  • s
    turns out the aspect ratio needed to be 11 to get a CL of 0.7 in 3d
  • s
    and it was also a rectangular wing
  • s
    Got itt
  • s
    Huh that is interesting indeed
  • s
    Alright thanks a ton!
  • s
    I js tried using the same wing and it's still running the solver but the values seem to be more or less plateaued at 0.16 ish
  • s
    But hearing this that seems somewhat realistic also given that I dont have boundary layers. So thanks
  • s
    i think adding boundary layers wont change things drastically
  • s
    Mhmmmm
  • s
    youll get more accurate behavior sure, but most engineering sims rely on the same wall functions you are using
  • s
    Also this is a pre-university project just to get an idea of how the softwares work and document it for lab positions later so I shouldnt be too worried about accuracy
  • s
    youd probably have a more fruitful time trying to validate your results against papers
  • s
    Mhmmmm sounds great
  • s
    fair enough that makes sense
  • s
    Yepp I should deffo do that
  • s
    Alright, thanks a ton for the help and reassurance!
  • s
    cheers mate no problem