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November 8, 2011, 07:02
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Mixed Boundaries
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#1 |
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New Member
Join Date: Nov 2011
Posts: 1
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Dear all
Is Edge not capable of working with mixed 2D element types on a single boundary? If not where do the normals (for a mesh with multiple regions/zones separated by element type) of a region's boundary have to face to? All inside the region? What about the connecting boundaries between regions? I attached all the relevant Edge outputs for clarification (hopefully). Any help would be much appreciated! Cgns2ffa recognizes the boundaries and converts the mesh: Code:
Grid only (Y/N) ? Input CGNS file ? nacelle_hm1.cgns Output FFA-format mesh file ? nacelle.bmsh Opening cgns file: nacelle_hm1.cgns Number of bases in the cgns file: 1 Number of zones in the cgns base: 1 Number of nodes: 79984 Number of cells: 176687 Coordinate dimension: 3 Number of sections in the zone: 5 Section number: 1, section name: fluid Number of elements: 176687 Element type: MIXED First parent data: 0 Section number: 2, section name: inflow Number of elements: 1326 Element type: MIXED First parent data: 0 Section number: 3, section name: outflow Number of elements: 1523 Element type: MIXED First parent data: 0 Section number: 4, section name: wall Number of elements: 6826 Element type: MIXED First parent data: 0 Section number: 5, section name: symmetry Number of elements: 17835 Element type: MIXED First parent data: 0 Number of boundaries: 4 Boundary number: 1, boundary name: inflow Boundary representation ElementList Boundary information on Vertex Boundary number: 2, boundary name: outflow Boundary representation ElementList Boundary information on Vertex Boundary number: 3, boundary name: wall Boundary representation ElementList Boundary information on Vertex Boundary number: 4, boundary name: symmetry Boundary representation ElementList Boundary information on Vertex Mixed tetra elements found and converted Mixed prismatic elements found and converted Correct any flipped boundary surface normals CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED) Mesh passed consistency check in MESH_CONSISTENCY Total number of flipped boundary elements: 0 Total number of boundary element warnings: 0 Writing file: nacelle.bmsh Done. ffalist output: Code:
Reading file: nacelle.bmsh done. N 0 x 0 2/ unstr_grid_data L 1 x 1 title = "Grid converted from CGNS filenacelle_hm1.cgns" N 0 x 0 4/ region L 1 x 1 region_name = "volume_elements" DF 79984 x 3 coordinates = 25.0799999237061 25.0799999237061 25.0799980163574 N 0 x 0 2/ element_group L 1 x 1 element_type = "tetra4" IF 50387 x 4 element_nodes = 73679 73679 73679 N 0 x 0 2/ element_group L 1 x 1 element_type = "penta6" IF 126300 x 6 element_nodes = 162 50 128 Code:
Grid only (Y/N) ? Input CGNS file ? nacelle_pw1_edit1.cgns Output FFA-format mesh file ? nacelle.bmsh Opening cgns file: nacelle_pw1_edit1.cgns Number of bases in the cgns file: 1 Number of zones in the cgns base: 3 Number of nodes: 50331 Number of cells: 91980 Coordinate dimension: 3 Number of sections in the zone: 5 Section number: 1, section name: PrismElements Number of elements: 91980 Element type: PENTA_6 First parent data: 0 Section number: 2, section name: Inlet Number of elements: 792 Element type: QUAD_4 First parent data: 0 Section number: 3, section name: Outlet Number of elements: 846 Element type: QUAD_4 First parent data: 0 Section number: 4, section name: Symmetry Number of elements: 1710 Element type: QUAD_4 First parent data: 0 Section number: 5, section name: Wall Number of elements: 5110 Element type: TRI_3 First parent data: 0 Number of boundaries: 4 Boundary number: 1, boundary name: Inlet Boundary representation ElementRange Boundary information on Vertex Boundary number: 2, boundary name: Outlet Boundary representation ElementRange Boundary information on Vertex Boundary number: 3, boundary name: Symmetry Boundary representation ElementRange Boundary information on Vertex Boundary number: 4, boundary name: Wall Boundary representation ElementRange Boundary information on Vertex Number of nodes: 19110 Number of cells: 34320 Coordinate dimension: 3 Number of sections in the zone: 4 Section number: 1, section name: PrismElements Number of elements: 34320 Element type: PENTA_6 First parent data: 0 Section number: 2, section name: Outlet Number of elements: 400 Element type: QUAD_4 First parent data: 0 Section number: 3, section name: Symmetry Number of elements: 1640 Element type: QUAD_4 First parent data: 0 Section number: 4, section name: Wall Number of elements: 1716 Element type: TRI_3 First parent data: 0 Number of boundaries: 3 Boundary number: 1, boundary name: Outlet Boundary representation ElementRange Boundary information on Vertex Boundary number: 2, boundary name: Symmetry Boundary representation ElementRange Boundary information on Vertex Boundary number: 3, boundary name: Wall Boundary representation ElementRange Boundary information on Vertex Number of nodes: 10543 Number of cells: 50387 Coordinate dimension: 3 Number of sections in the zone: 4 Section number: 1, section name: TetElements Number of elements: 50387 Element type: TETRA_4 First parent data: 0 Section number: 2, section name: Inlet Number of elements: 534 Element type: TRI_3 First parent data: 0 Section number: 3, section name: Outlet Number of elements: 277 Element type: TRI_3 First parent data: 0 Section number: 4, section name: Symmetry Number of elements: 833 Element type: TRI_3 First parent data: 0 Number of boundaries: 3 Boundary number: 1, boundary name: Inlet Boundary representation ElementRange Boundary information on Vertex Boundary number: 2, boundary name: Outlet Boundary representation ElementRange Boundary information on Vertex Boundary number: 3, boundary name: Symmetry Boundary representation ElementRange Boundary information on Vertex Correct any flipped boundary surface normals Region :volume_elements CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED) Mesh passed consistency check in MESH_CONSISTENCY Checking boundary number 1 of 4 Checking boundary number 2 of 4 Checking boundary number 3 of 4 Checking boundary number 4 of 4 Total number of flipped boundary elements: 8458 Total number of boundary element warnings: 0 Region :volume_elements CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED) Mesh passed consistency check in MESH_CONSISTENCY Checking boundary number 1 of 3 Checking boundary number 2 of 3 Checking boundary number 3 of 3 Total number of flipped boundary elements: 3756 Total number of boundary element warnings: 0 Region :volume_elements CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED) Mesh passed consistency check in MESH_CONSISTENCY Checking boundary number 1 of 3 Checking boundary number 2 of 3 Checking boundary number 3 of 3 Total number of flipped boundary elements: 1644 Total number of boundary element warnings: 0 Writing file: nacelle.bmsh Done. ffalist output: Code:
Reading file: nacelle.bmsh done. N 0 x 0 4/ unstr_grid_data L 1 x 1 title = "Grid converted from CGNS filenacelle_pw1_edit1.cgns" N 0 x 0 7/ region L 1 x 1 region_name = "volume_elements" DF 50331 x 3 coordinates = 25.0800007048720 25.0800000213147 25.0799985726355 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Inlet" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "quad4" IF 792 x 4 bound_elem_nodes = 2347 2346 2345 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Outlet" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "quad4" IF 846 x 4 bound_elem_nodes = 128 127 126 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Symmetry" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "quad4" IF 1710 x 4 bound_elem_nodes = 49 1847 1848 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Wall" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "tria3" IF 5110 x 3 bound_elem_nodes = 160 163 129 N 0 x 0 2/ element_group L 1 x 1 element_type = "penta6" IF 91980 x 6 element_nodes = 162 50 128 N 0 x 0 6/ region L 1 x 1 region_name = "volume_elements" DF 19110 x 3 coordinates = 29.0799999237060 29.0799999237060 29.0799999237060 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Outlet" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "quad4" IF 400 x 4 bound_elem_nodes = 50 51 52 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Symmetry" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "quad4" IF 1640 x 4 bound_elem_nodes = 21 22 23 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Wall" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "tria3" IF 1716 x 3 bound_elem_nodes = 101 21 71 N 0 x 0 2/ element_group L 1 x 1 element_type = "penta6" IF 34320 x 6 element_nodes = 99 22 102 N 0 x 0 6/ region L 1 x 1 region_name = "volume_elements" DF 10543 x 3 coordinates = 25.1604637019967 25.1457089979665 25.1558421926305 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Inlet" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "tria3" IF 534 x 3 bound_elem_nodes = 3040 2440 2416 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Outlet" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "tria3" IF 277 x 3 bound_elem_nodes = 2407 2409 82 N 0 x 0 2/ boundary L 1 x 1 boundary_name = "Symmetry" N 0 x 0 2/ belem_group L 1 x 1 bound_elem_type = "tria3" IF 833 x 3 bound_elem_nodes = 2448 2440 2416 N 0 x 0 2/ element_group L 1 x 1 element_type = "tetra4" IF 50387 x 4 element_nodes = 4238 4238 4238 Code:
********** DUAL STARTS **********
Input file (.ainp) ?
nacelle_run1.ainp
Reading file: "nacelle_run1.ainp"
done.
Reading file: "nacelle.aboc"
done.
Reading file: "nacelle.bmsh"
done.
Update mesh to multi-region format
Mesh already in multi-region format
Update boundary to multi-region format
BOUNDARY already in multi-region format
Title: Grid converted from CGNS filenacelle_pw1_edit1.cgns
No. of regions: 3
Region :volume_elements
CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED)
Mesh passed consistency check in MESH_CONSISTENCY
Checking boundary number 1 of 4
Checking boundary number 2 of 4
Checking boundary number 3 of 4
Checking boundary number 4 of 4
Total number of flipped boundary elements: 0
Total number of boundary element warnings: 0
Region :volume_elements
CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED)
Mesh passed consistency check in MESH_CONSISTENCY
Checking boundary number 1 of 3
Checking boundary number 2 of 3
Checking boundary number 3 of 3
Total number of flipped boundary elements: 0
Total number of boundary element warnings: 0
Region :volume_elements
CHECKING BOUNDARY ELEMENT ORIENTATION (UPDATED)
Mesh passed consistency check in MESH_CONSISTENCY
Checking boundary number 1 of 3
Checking boundary number 2 of 3
Checking boundary number 3 of 3
Total number of flipped boundary elements: 0
Total number of boundary element warnings: 0
Region: 1
No. of dimensions: 3
No. of nodes: 50331
No. of boundaries: 4
Checking for duplicate nodes
No duplicate nodes found
CREATING EDGE BASED MESH REPRESENTATION
Create Edge list
Element type: penta6
No. of elements: 91980
No. of element nodes: 6
Total number of edges: 195084
Boundaries
Boundaries
Boundary nr: 1
Boundary name : Inlet
Boundary element type: quad4
No. of boundary elements: 792
No. of boundary element nodes: 4
Boundary nr: 2
Boundary name : Outlet
Boundary element type: quad4
No. of boundary elements: 846
No. of boundary element nodes: 4
Boundary nr: 3
Boundary name : Symmetry
Boundary element type: quad4
No. of boundary elements: 1710
No. of boundary element nodes: 4
Boundary nr: 4
Boundary name : Wall
Boundary element type: tria3
No. of boundary elements: 5110
No. of boundary element nodes: 3
CHECK ELEMENTS
Element penta6 check ok!
Element check ok!
COMPUTE SURFACE NORMALS
CHECK CONTROL SURFACES
Global check of surface vectors.
Max dev. of accum. surface vector 0.878E+02 %
for node 50031
ERROR: THE DEVIATION OF ACCUMULATED SURFACE VECTORS
EXCEEDS 1 % ! TRY TO SWITCH THE BOUNDARY NORMALS.
********** AGGLOM STARTS **********
Input file (.ainp) ?
nacelle_run1.ainp
Reading file: "nacelle_run1.ainp"
done.
Reading file: "nacelle_run1.bedg"
ERROR IN MODULE FFA, ROUTINE "FFOPEN" !!!
--- THE FILE "nacelle_run1.bedg" IS NOT PRESENT ---
STOPPING EXECUTION!!
********** PDUAL STARTS **********
Input file (.ainp) ?
nacelle_run1.ainp
Reading file: "nacelle_run1.ainp"
done.
PDUAL = 0
>>>>>>>>> NO PLOTTING FILES <<<<<<<<<
********** PDUAL STOPS **********
********** PART STARTS **********
Input file (.ainp) ?
nacelle_run1.ainp
Reading file: "nacelle_run1.ainp"
done.
NPART = 1
>>>>>>> NO PARTITIONING <<<<<<<<
********** PART STOPS **********
********** REORDER STARTS **********
Input file (.ainp) or edge file (.bedg) ?
Method (blank for best method) ?
! NPART=1 means no reordering
>>>>>>>>> NO REORDERING <<<<<<<<<
********** COLORING STARTS **********
Edge input file ?
Reading file: nacelle_run1.ainp
** Only COLTYPE==2 is now handled by coloring
** "reorder" has superseeded "coloring"
********** DISTANCE AND LAMINAR REGIONS CALCULATIONS START **********
Edge input file?
Reading file: nacelle_run1.ainp
Distance calculation not requested
Done.
********** DISTANCE AND LAMINAR
REGIONS CALCULATION STOPS **********
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February 24, 2012, 15:16
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#2 |
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New Member
Adam Jirasek
Join Date: Mar 2011
Posts: 18
Rep Power: 15 |
Global check of surface vectors. Max dev. of accum. surface vector 0.878E+02 % for node 50031 ERROR: THE DEVIATION OF ACCUMULATED SURFACE VECTORS EXCEEDS 1 % ! TRY TO SWITCH THE BOUNDARY NORMALS. ********** AGGLOM STARTS **********
This is usually caused by an error in mesh. The usual error is you have a non matching cell or something like that. CGNS2FFA converter does not detect such error and converts the mesh. Try to plot your mesh on display and look for node 50031 to see how it looks like |
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