[vainilreb]

Hi everyone,

I'v got a little problem finishing my blockMesh (attached). I want to merge two smaller patches with one patch of the same size as the added size of the smaller ones. They are internal patches, so they should vanish in the end.

The nodes and the egdes make a perfect match as you can see from the screenshot (attached), but blockMesh produces an error in the "attachPolyTopoChanger"-Step, causing a segmentation fault. I'v tried my best to fix it on my own, but so far I've come to no solution.

Hope you know a fix!

Best regards,

Robert

P.S.: Don't mind the massive blockMeshDict, the important stuff is at the bottom of the file.

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.1.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 1;
vertices
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    (-0.0196 0 -1.04)//4
    (-0.0205 0 -1.04)//5
    (-0.0205 0 -0.44)//6
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    (-0.0196 0 -1.04)//12
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    (0.0205 0 -0.335)//16
    (0.0196 0 -0.335)//17
    (-0.0205 0 -0.335)//18
    (-0.0196 0 -0.335)//19
    (0.0205 0 -0.335)//20
    (0.0196 0 -0.335)//21
    (-0.0205 0 -0.335)//22
    (-0.0196 0 -0.335)//23
    (0.014 0 -0.44)//24
    (0.014 0 -0.335)//25
    (-0.014 0 -0.44)//26
    (-0.014 0 -0.335)//27
    (0.014 0 -0.44)//28
    (0.014 0 -0.335)//29
    (-0.014 0 -0.44)//30
    (-0.014 0 -0.335)//31
    (0.006 0 -0.44)//32
    (0.013 0 -0.44)//33
    (0.013 0 -0.335)//34
    (0.006 0 -0.335)//35
    (-0.006 0 -0.44)//36
    (-0.013 0 -0.44)//37
    (-0.013 0 -0.335)//38
    (-0.006 0 -0.335)//39
    (0.006 0 -0.44)//40
    (0.013 0 -0.44)//41
    (0.013 0 -0.335)//42
    (0.006 0 -0.335)//43
    (-0.006 0 -0.44)//44
    (-0.013 0 -0.44)//45
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    (-0.006 0 -0.335)//47
    (0.003 0 -0.44)//48
    (0.003 0 -0.335)//49
    (-0.003 0 -0.44)//50
    (-0.003 0 -0.335)//51
    (0.003 0 -0.44)//52
    (0.003 0 -0.335)//53
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    (-0.003 0 -0.335)//55
    (0.0205 0 -0.332)//56
    (0.0196 0 -0.332)//57
    (-0.0205 0 -0.332)//58
    (-0.0196 0 -0.332)//59
    (0.0205 0 -0.332)//60
    (0.0196 0 -0.332)//61
    (-0.0205 0 -0.332)//62
    (-0.0196 0 -0.332)//63
    (0 0.001 -0.314)//64
    (0.001 0 -0.314)//65
    (0.001 0 0.06)//66
    (0 0.001 0.06)//67
    (-0.001 0 -0.314)//68
    (0 -0.001 -0.314)//69
    (0 -0.001 0.06)//70
    (-0.001 0 0.06)//71
    (0.0205 0 -0.314)//72
    (0.0196 0 -0.314)//73
    (-0.0205 0 -0.314)//74
    (-0.0196 0 -0.314)//75
    (0.0205 0 -0.314)//76
    (0.0196 0 -0.314)//77
    (-0.0205 0 -0.314)//78
    (-0.0196 0 -0.314)//79
    (0 0.002 -0.314)//80
    (0.002 0 -0.314)//81 = 132
    (0.002 0 0.06)//82 = 133
    (0 0.002 0.06)//83
    (0 -0.002 -0.314)//84
    (-0.002 0 -0.314)//85 = 134
    (-0.002 0 0.06)//86 = 135
    (0 -0.002 0.06)//87
    (0.014 0 -0.332)//88
    (0.014 0 -0.314)//89
    (-0.014 0 -0.332)//90
    (-0.014 0 -0.314)//91
    (0.014 0 -0.332)//92
    (0.014 0 -0.314)//93
    (-0.014 0 -0.332)//94
    (-0.014 0 -0.314)//95
    (0.006 0 -0.332)//96
    (0.013 0 -0.332)//97
    (0.013 0 -0.314)//98
    (0.006 0 -0.314)//99
    (-0.006 0 -0.332)//100
    (-0.013 0 -0.332)//101
    (-0.013 0 -0.314)//102
    (-0.006 0 -0.314)//103
    (0.006 0 -0.332)//104
    (0.013 0 -0.332)//105
    (0.013 0 -0.314)//106
    (0.006 0 -0.314)//107
    (-0.006 0 -0.332)//108
    (-0.013 0 -0.332)//109
    (-0.013 0 -0.314)//110
    (-0.006 0 -0.314)//111
    (0.003 0 -0.332)//112
    (0.003 0 -0.314)//113
    (-0.003 0 -0.332)//114
    (-0.003 0 -0.314)//115
    (0.003 0 -0.332)//116
    (0.003 0 -0.314)//117
    (-0.003 0 -0.332)//118
    (-0.003 0 -0.314)//119
    (0.006 0 0.06)//120
    (0.003 0 0.06)//121
    (-0.006 0 0.06)//122
    (-0.003 0 0.06)//123
    (0.006 0 0.06)//124
    (0.003 0 0.06)//125
    (-0.006 0 0.06)//126
    (-0.003 0 0.06)//127
    (0.002 0 -0.314)//128
    (0.002 0 0.06)//129
    (-0.002 0 -0.314)//130
    (-0.002 0 0.06)//131
    (0.002 0 -0.314)//132
    (0.002 0 0.06)//133
    (-0.002 0 -0.314)//134
    (-0.002 0 0.06)//135
    (0.014 0 0.06)//136
    (0.013 0 0.06)//137
    (-0.014 0 0.06)//138
    (-0.013 0 0.06)//139
    (0.014 0 0.06)//140
    (0.013 0 0.06)//141
    (-0.014 0 0.06)//142
    (-0.013 0 0.06)//143
    (0.0196 0 0.06)//144
    (-0.0196 0 0.06)//145
    (0.0196 0 0.06)//146
    (-0.0196 0 0.06)//147
    (0.0205 0 0.06)//148
    (-0.0205 0 0.06)//149
    (0.0205 0 0.06)//
    (-0.0205 0 0.06)//151
    (0.0205 0 0.252)//152
    (0.0196 0 0.252)//153
    (-0.0205 0 0.252)//154
    (-0.0196 0 0.252)//155
    (0.0205 0 0.252)//156
    (0.0196 0 0.252)//157
    (-0.0205 0 0.252)//158
    (-0.0196 0 0.252)//159
    (0.014 0 0.252)//160
    (-0.014 0 0.252)//161
    (0.014 0 0.252)//162
    (-0.014 0 0.252)//163
    (0.0205 0 0.465)//164
    (0.0196 0 0.465)//165
    (-0.0205 0 0.465)//166
    (-0.0196 0 0.465)//167
    (0.0205 0 0.465)//168
    (0.0196 0 0.465)//169
    (-0.0205 0 0.465)//170
    (-0.0196 0 0.465)//171
    (0.014 0 0.465)//172
    (-0.014 0 0.465)//173
    (0.014 0 0.465)//174
    (-0.014 0 0.465)//175
    (0.006 0 0.252)//176
    (0.013 0 0.252)//177
    (0.013 0 0.465)//178
    (0.006 0 0.465)//179
    (-0.006 0 0.252)//180
    (-0.013 0 0.252)//181
    (-0.013 0 0.465)//182
    (-0.006 0 0.465)//183
    (0.006 0 0.252)//184
    (0.013 0 0.252)//185
    (0.013 0 0.465)//186
    (0.006 0 0.465)//187
    (-0.006 0 0.252)//188
    (-0.013 0 0.252)//189
    (-0.013 0 0.465)//190
    (-0.006 0 0.465)//191
);
blocks
(
    hex (0 1 2 3 4 5 6 7) (1 200 30) simpleGrading (1 1 1) //-1.04 -> 0.44
    hex (12 13 14 15 8 9 10 11) (1 200 30) simpleGrading (1 1 1)
    hex (3 2 16 17 7 6 18 19) (1 35 30) simpleGrading (1 1 1)//-0.44 -> -0.335
    hex (15 14 22 23 11 10 20 21) (1 35 30) simpleGrading (1 1 1)
    hex (24 3 17 25 26 7 19 27) (5 35 30) simpleGrading (1 1 1)
    hex (30 15 23 31 28 11 21 29) (5 35 30) simpleGrading (1 1 1)
    hex (32 33 34 35 36 37 38 39) (7 35 30) simpleGrading (1 1 1)
    hex (44 45 46 47  40 41 42 43) (7 35 30) simpleGrading (1 1 1)
    hex (48 32 35 49 50 36 39 51) (3 35 30) simpleGrading (1 1 1)
    hex (54 44 47  55 52 40 43 53) (3 35 30) simpleGrading (1 1 1)
    hex (33 24 25 34 37 26 27 38) (1 35 30) simpleGrading (1 1 1)
    hex (45 30 31 46 41 28 29 42) (1 35 30) simpleGrading (1 1 1)
    hex (17 16 56 57 19 18 58 59) (1 1 30) simpleGrading (1 1 1)//-0.335 -> -0.332
    hex (23 22 62 63 21 20 60 61) (1 1 30) simpleGrading (1 1 1)
    hex (25 17 57 88 27 19 59 90) (5 1 30) simpleGrading (1 1 1)
    hex (31 23 63 94 29 21 61 92) (5 1 30) simpleGrading (1 1 1)
    hex (34 25 88 97 38 27 90 101) (1 1 30) simpleGrading (1 1 1)
    hex (46 31 94 109 42 29 92 105) (1 1 30) simpleGrading (1 1 1)
    hex (57 56 72 73 59 58 74 75) (1 6 30) simpleGrading (1 1 1)//-0.332 -> -0.314
    hex (63 62 78 79 61 60 76 77) (1 6 30) simpleGrading (1 1 1)
    hex (88 57 73 89 90 59 75 91) (5 6 30) simpleGrading (1 1 1)
    hex (94 63 79 95 92 61 77 93) (5 6 30) simpleGrading (1 1 1)
    hex (96 97 98 99 100 101 102  103) (7 6 30) simpleGrading (1 1 1)
    hex (108 109 110 111 104 105 106 107) (7 6 30) simpleGrading (1 1 1)
    hex (112 96 99 113 114 100 103 115) (3 6 30) simpleGrading (1 1 1)
    hex (118 108 111 119 116 104 107 117) (3 6 30) simpleGrading (1 1 1)
    hex (97 88 89 98 101 90 91 102 ) (1 6 30) simpleGrading (1 1 1)
    hex (109 94 95 110 105 92 93 106) (1 6 30) simpleGrading (1 1 1)
    hex (113 99 120 121 115 103 122 123) (3 125 30) simpleGrading (1 1 1)//-0.314 -> 0.06
    hex (119 111 126 127 117 107 124 125) (3 125 30) simpleGrading (1 1 1)
    hex (128 113 121 129 130 115 123 131) (1 125 30) simpleGrading (1 1 1)
    hex (134 119 127 135 132 117 125 133) (1 125 30) simpleGrading (1 1 1)
    hex (98 89 136 137 102  91 138 139) (1 125 30) simpleGrading (1 1 1)
    hex (110 95 142 143 106 93 140 141) (1 125 30) simpleGrading (1 1 1)
    hex (99 98 137 120 103 102  139 122 ) (7 125 30) simpleGrading (1 1 1)
    hex (111 110 143 126 107 106 141 124) (7 125 30) simpleGrading (1 1 1)
    hex (89 73 144 136 91 75 145 138) (5 125 30) simpleGrading (1 1 1)
    hex (95 79 147 142 93 77 146 140) (5 125 30) simpleGrading (1 1 1)
    hex (73 72 148 144 75 74 149 145) (1 125 30) simpleGrading (1 1 1)
    hex (79 78 151 147 77 76 150 146) (1 125 30) simpleGrading (1 1 1)
    hex (144 148 152 153 145 149 154 155) (1 64 30) simpleGrading (1 1 1)//0.06 -> 0.252
    hex (147 151 158 159 146 150 156 157) (1 64 30) simpleGrading (1 1 1)
    hex (136 144 153 160 138 145 155 161) (5 64 30) simpleGrading (1 1 1)
    hex (142 147 159 163 140 146 157 162) (5 64 30) simpleGrading (1 1 1)
    hex (153 152 164 165 155 154 166 167) (1 71 30) simpleGrading (1 1 1)//0.252 -> 0.465
    hex (159 158 170 171 157 156 168 169) (1 71 30) simpleGrading (1 1 1)
    hex (160 153 165 172 161 155 167 173) (5 71 30) simpleGrading (1 1 1)
    hex (163 159 171 175 162  157 169 174) (5 71 30) simpleGrading (1 1 1)
    hex (176 177 178 179 180 181 182 183) (7 71 30) simpleGrading (1 1 1)
    hex (188 189 190 191 184 185 186 187) (7 71 30) simpleGrading (1 1 1)
    hex (177 160 172 178 181 161 173 182) (1 71 30) simpleGrading (1 1 1)
    hex (189 163 175 190 185 162 174 186) (1 71 30) simpleGrading (1 1 1)
    hex (64 65 66 67 68 69 70 71) (15 125 15) simpleGrading (1 1 1)//Rechteckblock in der Mitte
    hex (80 128 129 83 64 65 66 67) (15 125 1) simpleGrading (1 1 1)//1. Kreiselement Mitte
    hex (84 134 135 87 69 68 71 70) (15 125 1) simpleGrading (1 1 1)//2. Kreiselement Mitte
    hex (132 84 87 133 65 69 70 66) (15 125 1) simpleGrading (1 1 1)//3. Kreiselement Mitte
    hex (130 80 83 131 68 64 67 71) (15 125 1) simpleGrading (1 1 1)//4. Kreiselement Mitte
);
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     {
 type patch;
 faces
 (
   (80 83 129 128) //+
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 type patch;
 faces
 (
   (128 129 131 130) //+
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);
mergePatchPairs
(
 (merge1_1 merge1_2)
// (merge2_1 merge2_2)
);
// ************************************************************************* //

[vainilreb]

Hi everyone,

after a weekend of PAIN I finally fixed it by myself:

Most important: the right vertex order in block definition. Make sure you go in x-Direction from vertex 0 to vertex 1, in y-Direction from 1 to 2 and in z-Direction from 0 to 4 - for each and every block you're defining.

Then I was able to merge all patches but the last 2. There I used stitchMesh -perfect -overwrite <master> <slave> and finally received my single-region mesh without internal patches.

Maybe this is useful for someone.

Best regards,

Robert