[LVDH]

Hello,
this is my first post here.
Currently I am working at a company which provides CFD services mainly for the automotive industry. Right now I am still an intern but shortly will start writing my diploma thesis here. Well my task is to find out what can be done with OpenFoam.

Often, when I try to create a mesh with snappyHexMesh I get problems with the boundary layer. And this leads to my first question:

Check out the attached picture of a Porsche I have meshed.
Why is the boundary layer below the door?

In case you think my blockMeshDict is fault, here is the text:

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 1.0;

vertices
(
      (       -70        -70        8.000)
      (        300        -70        8.000)
      (        300         140        8.000)
      (       -70         140        8.000)
      
      (       -70        -70        100.000)
      (        300        -70        100.000)
      (        300         140        100.000)
      (       -70         140        100.000)
);

blocks
(
      hex (0 1 2 3 4 5 6 7) (40 20 10) simpleGrading (1 1 1)

);

edges
(
);

patches
(
      patch inlet
      (
            (0 4 7 3)
      )
      patch outlet
      (
            (1 2 6 5)
      )
      patch floor
      (
            (0 3 2 1)
      )
      patch sides
      (
            (0 1 5 4)
            (4 5 6 7)
            (2 3 7 6)
      )
);

mergeMatchPairs
(
);