[cfd1609496]

Hi Foamers,
I refer to the forum: --> FOAM FATAL ERROR: Trying to specify a boundary face
but i don understand which is the solution and what the solution is about...im too novice in OpenFoam.


So I succeed the blockMeshDict from my successful case of 7blocks together making an 'I' shape, unfortunately this time to make a 27 blocks i faced the error:

--> FOAM FATAL ERROR:
Trying to specify a boundary face 4(21 37 42 26) on the face on cell 13 which is either an internal face or already belongs to some other patch.  This is face 0 of patch 0 named HeatedWalls.

Below is my blockMeshDict:

vertices
  (
                  //z0plane
  (0.0 0.0 0.0)
  (4.95 0.0 0.0)
  (5.05 0.0 0.0)
  (10.0 0.0 0.0)
  (10.0 4.25 0.0)
  (5.05 4.25 0.0)
  (4.95 4.25 0.0)
  (0.0 4.25 0.0)
  (0.0 5.75 0.0)
  (4.95 5.75 0.0)
  (5.05 5.75 0.0)
  (10.0 5.75 0.0)
  (10.0 10.0 0.0)
  (5.05 10.0 0.0)
  (4.95 10.0 0.0)
  (0.0 10.0 0.0)
   
  //z1plane
  (0.0 0.0 4.65)
  (4.95 0.0 4.65)
  (5.05 0.0 4.65)
  (10.0 0.0 4.65)
  (10.0 4.25 4.65)
  (5.05 4.25 4.65)
  (4.95 4.25 4.65)
  (0.0 4.25 4.65)
  (0.0 5.75 4.65)
  (4.95 5.75 4.65)
  (5.05 5.75 4.65)
  (10.0 5.75 4.65)
  (10.0 10.0 4.65)
  (5.05 10.0 4.65)
  (4.95 10.0 4.65)
  (0.0 10.0 4.65)
   
  //z2plane
  (0.0 0.0 5.35)
  (4.95 0.0 5.35)
  (5.05 0.0 5.35)
  (10.0 0.0 5.35)
  (10.0 4.25 5.35)
  (5.05 4.25 5.35)
  (4.95 4.25 5.35)
  (0.0 4.25 5.35)
  (0.0 5.75 5.35)
  (4.95 5.75 5.35)
  (5.05 5.75 5.35)
  (10.0 5.75 5.35)
  (10.0 10.0 5.35)
  (5.05 10.0 5.35)
  (4.95 10.0 5.35)
  (0.0 10.0 5.35)
   
  //z3plane
  (0.0 0.0 10.0)
  (4.95 0.0 10.0)
  (5.05 0.0 10.0)
  (10.0 0.0 10.0)
  (10.0 4.25 10.0)
  (5.05 4.25 10.0)
  (4.95 4.25 10.0)
  (0.0 4.25 10.0)
  (0.0 5.75 10.0)
  (4.95 5.75 10.0)
  (5.05 5.75 10.0)
  (10.0 5.75 10.0)
  (10.0 10.0 10.0)
  (5.05 10.0 10.0)
  (4.95 10.0 10.0)
  (0.0 10.0 10.0)
   
  );
   
  blocks
  (
                  //z0z1
                  hex (0 1 6 7 16 17 22 23) (1 1 1) simpleGrading (1 1 1)
       hex (1 2 5 6 17 18 21 22) (1 1 1) simpleGrading (1 1 1)
       hex (2 3 4 5 18 19 20 21) (1 1 1) simpleGrading (1 1 1)
       hex (7 6 9 8 23 22 25 24) (1 1 1) simpleGrading (1 1 1)
                  hex (6 5 10 9 22 21 26 25) (1 1 1) simpleGrading (1 1 1)
       hex (5 4 11 10 21 20 27 26) (1 1 1) simpleGrading (1 1 1)
       hex (8 9 14 15 24 25 30 31) (1 1 1) simpleGrading (1 1 1)
       hex (9 10 13 14 25 26 29 30) (1 1 1) simpleGrading (1 1 1)
                  hex (10 11 12 13 26 27 28 29) (1 1 1) simpleGrading (1 1 1)
       
       //z1z2
       hex (16 17 22 23 32 33 38 39) (1 1 1) simpleGrading (1 1 1)
       hex (17 18 21 22 33 34 37 38) (1 1 1) simpleGrading (1 1 1)
       hex (18 19 20 21 34 35 36 37) (1 1 1) simpleGrading (1 1 1)
       hex (23 22 25 24 39 38 41 40) (1 1 1) simpleGrading (1 1 1)
       hex (22 21 26 25 38 37 42 41) (1 1 1) simpleGrading (1 1 1)
       hex (21 20 27 26 37 36 43 42) (1 1 1) simpleGrading (1 1 1)
       hex (24 25 30 31 40 41 46 47) (1 1 1) simpleGrading (1 1 1)
       hex (25 26 29 30 41 42 45 46) (1 1 1) simpleGrading (1 1 1)
       hex (26 27 28 29 42 43 44 45) (1 1 1) simpleGrading (1 1 1)
   
       //z2z3
       hex (32 33 38 39 48 49 54 55) (1 1 1) simpleGrading (1 1 1)
       hex (33 34 37 38 49 50 53 54) (1 1 1) simpleGrading (1 1 1)
       hex (34 35 36 37 50 51 52 53) (1 1 1) simpleGrading (1 1 1)
       hex (39 38 41 40 55 54 57 56) (1 1 1) simpleGrading (1 1 1)
       hex (38 37 42 41 54 53 58 57) (1 1 1) simpleGrading (1 1 1)
       hex (37 36 43 42 53 52 59 58) (1 1 1) simpleGrading (1 1 1)
       hex (40 41 46 47 56 57 62 63) (1 1 1) simpleGrading (1 1 1)
       hex (41 42 45 46 57 58 61 62) (1 1 1) simpleGrading (1 1 1)
       hex (42 43 44 45 58 59 60 61) (1 1 1) simpleGrading (1 1 1)
   
  );
   
  boundary
  (
       HeatedWalls
       {
             type wall;
             faces
                  (
                                  (21 37 42 26)
                  );
  }
   
  Walls
  {
                  type wall;
                  faces
                  (
                                  (22 38 41 25)
                                  (22 21 26 25)
                                  (38 37 42 41)
                  );
  }
   
  Openings
  {
                  type patch;
                  faces
                  (
                                  //each has 9 planes
                                                  //z0
                                                  (0 1 6 7)
                                                  (1 2 5 6)
                                                  (2 3 4 5)
                                                  (7 6 9 8)
                                                  (6 5 10 9)
                                                  (5 4 11 10)
                                                  (8 9 14 15)
                                                  (9 10 13 14)
                                                  (10 11 12 13)
   
   
                                                  //z1-1 for back of Walls
                                                  (16 17 22 23)
                                                  (17 18 21 22)
                                                  (18 19 20 21)
                                                  (23 22 25 24)
   
                                                  (21 20 27 26)
                                                  (24 25 30 31)
                                                  (25 26 29 30)
                                                  (26 27 28 29)
                                                  
                                                  //z2-1 for front of Walls
                                                  (32 33 38 39)
                                                  (33 34 37 38)
                                                  (34 35 36 37)
                                                  (39 38 41 40)
                                                  
                                                  (37 36 43 42)
                                                  (40 41 46 47)
                                                  (41 42 45 46)
                                                  (42 43 44 45)
   
  //z3
                                                  (48 49 54 55)
                                                  (49 50 53 54)
                                                  (50 51 52 53)
                                                  (55 54 57 56)
                                                  (54 53 58 57)
                                                  (53 52 59 58)
                                                  (56 57 62 63)
                                                  (57 58 61 62)
                                                  (58 59 60 61)
   
                                                  //x0
                                                  (0 7 23 16)
                                                  (7 8 24 23)
                                                  (8 15 31 24)
                                                  (16 23 39 32)
                                                  (23 24 40 39)
                                                  (24 31 47 40)
                                                  (32 39 55 48)
                                                  (39 40 56 55)
                                                  (40 47 63 56)
   
                                                  //x1-1 for left of Walls
                                                  (1 6 22 17)
                                                  (6 9 25 22)
                                                  (9 14 30 25)
                                                  (17 22 38 33)
   
                                                  (25 30 46 41)
                                                  (33 38 54 49)
                                                  (38 41 57 54)
                                                  (41 46 62 57)
   
                                                  //x2-1 for HeatedWalls
                                                  (2 5 21 18)
                                                  (5 10 26 21)
                                                  (10 13 29 26)
                                                  (18 21 37 34)
   
                                                  (26 29 42 45)
                                                  (34 37 53 50)
                                                  (37 42 58 53)
                                                  (42 45 61 58)
   
                                                  //x3
                                                  (3 4 20 19)
                                                  (4 11 27 20)
                                                  (11 12 28 27)
                                                  (19 20 36 35)
                                                  (20 27 43 36)
                                                  (27 28 44 43)
                                                  (35 36 52 51)
                                                  (36 43 59 52)
                                                  (43 44 60 59)
   
                                                  //y0
                                                  (0 16 17 1)
                                                  (1 17 18 2)
                                                  (2 18 19 3)
                                                  (16 32 33 17)
                                                  (17 33 34 18)
                                                  (18 34 35 19)
                                                  (32 48 49 33)
                                                  (33 49 50 34)
                                                  (34 50 51 35)
   
                                                  //y1
                                                  (7 23 22 6)
                                                  (6 22 21 5)
                                                  (5 21 20 4)
                                                  (23 39 38 22)
                                                  (22 38 37 21)
                                                  (21 37 36 20)
                                                  (39 55 54 38)
                                                  (38 54 53 37)
                                                  (37 53 52 36)
   
                                                  //y2
                                  (8 24 25 9)
                                  (9 25 26 10)
                                  (10 26 27 11)
                                  (24 40 41 25)
                                  (25 41 42 26)
                                  (26 42 43 27)
                                  (40 56 57 41)
                                  (41 57 58 42)
                                  (42 58 59 43)
   
                                  //y3
                                  (15 31 30 14)
                                  (14 30 29 13)
                                  (13 29 28 12)
                                  (31 47 46 30)
                                  (30 46 45 29)
                                  (29 45 44 28)
                                  (47 63 62 46)
                                  (46 62 61 45)
                                  (45 61 60 44)
  );
       }
   
   
  );

Can anyone help me with this error?


Many thanks,
Cham

[yambanshee]

The problem tells you that the boundary "HeatedWalls" is inside of your mesh, and not an actual boundary.
If your goal is to create a thin wall inside of your mesh, look into using baffles (createBaffleDict)

[cfd1609496]

Originally Posted by yambanshee

The problem tells you that the boundary "HeatedWalls" is inside of your mesh, and not an actual boundary.
If your goal is to create a thin wall inside of your mesh, look into using baffles (createBaffleDict)

Thank you very much!