[JinBiao]

I am trying to generate a helical coil with gmsh. My approach is to generate a circle first and then extrude it. Below is the file for gmsh. I got errors when run checkMesh. And when I check the geometry in paraview, I found that the coil wall is not one piece. There are many small pieces which are grouped into the patch defaultFaces. Can anyone help me out? Thank you very much!!!

s1 = 1.753000E-04 ;
s3 = 8.765000E-05 ;
s2 = 4.382500E-05 ;

Cx = 7.350000E-03 ;
Cy = 0.000000E+00 ;
Cz = 0.000000E+00 ;
R1 = 8.765000E-04 ;
R2 = 8.765000E-04 ;
dh = 5.950000E-04 ;

Point (1) = { Cx, Cy, Cz,s1};
Point (2) = { Cx+R1, Cy, Cz,s1};
Point (3) = { Cx, Cy+R1, Cz,s1};
Point (4) = { Cx-R1, Cy, Cz,s1};
Point (5) = { Cx, Cy-R1, Cz,s1};
Circle(1) = {2,1,3};
Circle(2) = {3,1,4};
Circle(3) = {4,1,5};
Circle(4) = {5,1,2};

Line Loop(10) = {1,2,3,4};        //int circ

Plane Surface(30) = {10};
// notes: Layers{n}, n is the number of node in the extrusion direction

ext1[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{30};
 Layers{5}; Recombine;};

ext2[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext1[0]};
 Layers{5}; Recombine;};

ext3[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext2[0]};
 Layers{5}; Recombine;};

ext4[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext3[0]};
 Layers{5}; Recombine;};

ext5[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext4[0]};
 Layers{5}; Recombine;};

ext6[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext5[0]};
 Layers{5}; Recombine;};

ext7[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext6[0]};
 Layers{5}; Recombine;};

ext8[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext7[0]};
 Layers{5}; Recombine;};

ext9[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext8[0]};
 Layers{5}; Recombine;};

ext10[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext9[0]};
 Layers{5}; Recombine;};

ext11[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext10[0]};
 Layers{5}; Recombine;};

ext12[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext11[0]};
 Layers{5}; Recombine;};

ext13[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext12[0]};
 Layers{5}; Recombine;};

ext14[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext13[0]};
 Layers{5}; Recombine;};

ext15[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext14[0]};
 Layers{5}; Recombine;};

ext16[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext15[0]};
 Layers{5}; Recombine;};

ext17[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext16[0]};
 Layers{5}; Recombine;};

ext18[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext17[0]};
 Layers{5}; Recombine;};

ext19[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext18[0]};
 Layers{5}; Recombine;};

ext20[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext19[0]};
 Layers{5}; Recombine;};

ext21[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext20[0]};
 Layers{5}; Recombine;};

ext22[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext21[0]};
 Layers{5}; Recombine;};

ext23[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext22[0]};
 Layers{5}; Recombine;};

ext24[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext23[0]};
 Layers{5}; Recombine;};

ext25[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext24[0]};
 Layers{5}; Recombine;};

ext26[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext25[0]};
 Layers{5}; Recombine;};

ext27[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext26[0]};
 Layers{5}; Recombine;};

ext28[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext27[0]};
 Layers{5}; Recombine;};

ext29[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext28[0]};
 Layers{5}; Recombine;};

ext30[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext29[0]};
 Layers{5}; Recombine;};

ext31[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext30[0]};
 Layers{5}; Recombine;};

ext32[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext31[0]};
 Layers{5}; Recombine;};

ext33[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext32[0]};
 Layers{5}; Recombine;};

ext34[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext33[0]};
 Layers{5}; Recombine;};

ext35[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext34[0]};
 Layers{5}; Recombine;};

ext36[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext35[0]};
 Layers{5}; Recombine;};

ext37[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext36[0]};
 Layers{5}; Recombine;};

ext38[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext37[0]};
 Layers{5}; Recombine;};

ext39[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext38[0]};
 Layers{5}; Recombine;};

ext40[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext39[0]};
 Layers{5}; Recombine;};

ext41[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext40[0]};
 Layers{5}; Recombine;};

ext42[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext41[0]};
 Layers{5}; Recombine;};

ext43[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext42[0]};
 Layers{5}; Recombine;};

ext44[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext43[0]};
 Layers{5}; Recombine;};

ext45[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext44[0]};
 Layers{5}; Recombine;};

ext46[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext45[0]};
 Layers{5}; Recombine;};

ext47[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext46[0]};
 Layers{5}; Recombine;};

ext48[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext47[0]};
 Layers{5}; Recombine;};

ext49[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext48[0]};
 Layers{5}; Recombine;};

ext50[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext49[0]};
 Layers{5}; Recombine;};

ext51[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext50[0]};
 Layers{5}; Recombine;};

ext52[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext51[0]};
 Layers{5}; Recombine;};

ext53[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext52[0]};
 Layers{5}; Recombine;};

ext54[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext53[0]};
 Layers{5}; Recombine;};

ext55[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext54[0]};
 Layers{5}; Recombine;};

ext56[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext55[0]};
 Layers{5}; Recombine;};

ext57[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext56[0]};
 Layers{5}; Recombine;};

ext58[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext57[0]};
 Layers{5}; Recombine;};

ext59[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext58[0]};
 Layers{5}; Recombine;};

ext60[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext59[0]};
 Layers{5}; Recombine;};

ext61[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext60[0]};
 Layers{5}; Recombine;};

ext62[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext61[0]};
 Layers{5}; Recombine;};

ext63[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext62[0]};
 Layers{5}; Recombine;};

ext64[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext63[0]};
 Layers{5}; Recombine;};

ext65[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext64[0]};
 Layers{5}; Recombine;};

ext66[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext65[0]};
 Layers{5}; Recombine;};

ext67[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext66[0]};
 Layers{5}; Recombine;};

ext68[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext67[0]};
 Layers{5}; Recombine;};

ext69[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext68[0]};
 Layers{5}; Recombine;};

ext70[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext69[0]};
 Layers{5}; Recombine;};

ext71[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext70[0]};
 Layers{5}; Recombine;};

ext72[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext71[0]};
 Layers{5}; Recombine;};

ext73[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext72[0]};
 Layers{5}; Recombine;};

ext74[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext73[0]};
 Layers{5}; Recombine;};

ext75[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext74[0]};
 Layers{5}; Recombine;};

ext76[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext75[0]};
 Layers{5}; Recombine;};

ext77[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext76[0]};
 Layers{5}; Recombine;};

ext78[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext77[0]};
 Layers{5}; Recombine;};

ext79[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext78[0]};
 Layers{5}; Recombine;};

ext80[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext79[0]};
 Layers{5}; Recombine;};

ext81[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext80[0]};
 Layers{5}; Recombine;};

ext82[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext81[0]};
 Layers{5}; Recombine;};

ext83[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext82[0]};
 Layers{5}; Recombine;};

ext84[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext83[0]};
 Layers{5}; Recombine;};

ext85[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext84[0]};
 Layers{5}; Recombine;};

ext86[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext85[0]};
 Layers{5}; Recombine;};

ext87[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext86[0]};
 Layers{5}; Recombine;};

ext88[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext87[0]};
 Layers{5}; Recombine;};

ext89[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext88[0]};
 Layers{5}; Recombine;};

ext90[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext89[0]};
 Layers{5}; Recombine;};

ext91[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext90[0]};
 Layers{5}; Recombine;};

ext92[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext91[0]};
 Layers{5}; Recombine;};

ext93[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext92[0]};
 Layers{5}; Recombine;};

ext94[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext93[0]};
 Layers{5}; Recombine;};

ext95[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext94[0]};
 Layers{5}; Recombine;};

ext96[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext95[0]};
 Layers{5}; Recombine;};

ext97[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext96[0]};
 Layers{5}; Recombine;};

ext98[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext97[0]};
 Layers{5}; Recombine;};

ext99[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext98[0]};
 Layers{5}; Recombine;};

ext100[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext99[0]};
 Layers{5}; Recombine;};

ext101[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext100[0]};
 Layers{5}; Recombine;};

ext102[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext101[0]};
 Layers{5}; Recombine;};

ext103[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext102[0]};
 Layers{5}; Recombine;};

ext104[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext103[0]};
 Layers{5}; Recombine;};

ext105[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext104[0]};
 Layers{5}; Recombine;};

ext106[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext105[0]};
 Layers{5}; Recombine;};

ext107[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext106[0]};
 Layers{5}; Recombine;};

ext108[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext107[0]};
 Layers{5}; Recombine;};

ext109[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext108[0]};
 Layers{5}; Recombine;};

ext110[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext109[0]};
 Layers{5}; Recombine;};

ext111[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext110[0]};
 Layers{5}; Recombine;};

ext112[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext111[0]};
 Layers{5}; Recombine;};

ext113[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext112[0]};
 Layers{5}; Recombine;};

ext114[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext113[0]};
 Layers{5}; Recombine;};

ext115[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext114[0]};
 Layers{5}; Recombine;};

ext116[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext115[0]};
 Layers{5}; Recombine;};

ext117[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext116[0]};
 Layers{5}; Recombine;};

ext118[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext117[0]};
 Layers{5}; Recombine;};

ext119[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext118[0]};
 Layers{5}; Recombine;};

ext120[] = Extrude {{0,dh,0}, {0,1,0}, {0,0,0}, Pi/2} {
  Surface{ext119[0]};
 Layers{5}; Recombine;};

ext121[] = Extrude {{0,dh,0}, {0,1,0}, {Cx/2,Cy,Cz}, Pi/2} {
  Surface{ext120[0]};
 Layers{5}; Recombine;};

ext122[] = Extrude {{0,-dh,0}, {0,1,0}, {Cx/2,Cy,Cz}, -Pi/2} {
  Surface{30};
 Layers{5}; Recombine;};

ext123[] = Extrude {{0,0,Cx/2}, {0,0,1}, {Cx/2, Cy+4*30*dh+Cx/2,Cz}, -Pi/2}  {
  Surface{ext121[0]};
 Layers{2*5}; Recombine;};

ext124[] = Extrude {{0,0,-Cx/2}, {0,0,1}, {Cx/2,Cy-dh-Cx/2,Cz}, Pi/2} {
  Surface{ext122[0]};
 Layers{2*5}; Recombine;};

ext125[] =Extrude {0,10*1.753000E-03, 0} {
  Surface{ext123[0]};
 Layers{4*5}; Recombine;};

ext126[] =Extrude {0,-10*1.753000E-03, 0} {
  Surface{ext124[0]};
 Layers{4*5}; Recombine;};

Physical Surface("inlet") = {ext125[0]};
Physical Surface("outlet") = {ext126[0]};

Physical Surface("coilInnerSurface")= {ext1[2],ext1[3],ext1[4],ext1[5],ext2[2],ext2[3],ext2[4],ext2[5],ext3[2],ext3[3],ext3[4],ext3[5],ext4[2],ext4[3],ext4[4],ext4[5],ext5[2],ext5[3],ext5[4],ext5[5],
ext6[2],ext6[3],ext6[4],ext6[5],ext7[2],ext7[3],ext7[4],ext7[5],ext8[2],ext8[3],ext8[4],ext8[5],ext9[2],ext9[3],ext9[4],ext9[5],ext10[2],ext10[3],ext10[4],ext10[5],
ext11[2],ext11[3],ext11[4],ext11[5],ext12[2],ext12[3],ext12[4],ext12[5],ext13[2],ext13[3],ext13[4],ext13[5],ext14[2],ext14[3],ext14[4],ext14[5],ext15[2],ext15[3],ext15[4],ext15[5],
ext16[2],ext16[3],ext16[4],ext16[5],ext17[2],ext17[3],ext17[4],ext17[5],ext18[2],ext18[3],ext18[4],ext18[5],ext19[2],ext19[3],ext19[4],ext19[5],ext20[2],ext20[3],ext20[4],ext20[5],
ext21[2],ext21[3],ext21[4],ext21[5],ext22[2],ext22[3],ext22[4],ext22[5],ext23[2],ext23[3],ext23[4],ext23[5],ext24[2],ext24[3],ext24[4],ext24[5],ext25[2],ext25[3],ext25[4],ext25[5],
ext26[2],ext26[3],ext26[4],ext26[5],ext27[2],ext27[3],ext27[4],ext27[5],ext28[2],ext28[3],ext28[4],ext28[5],ext29[2],ext29[3],ext29[4],ext29[5],ext30[2],ext30[3],ext30[4],ext30[5],
ext31[2],ext31[3],ext31[4],ext31[5],ext32[2],ext32[3],ext32[4],ext32[5],ext33[2],ext33[3],ext33[4],ext33[5],ext34[2],ext34[3],ext34[4],ext34[5],ext35[2],ext35[3],ext35[4],ext35[5],
ext36[2],ext36[3],ext36[4],ext36[5],ext37[2],ext37[3],ext37[4],ext37[5],ext38[2],ext38[3],ext38[4],ext38[5],ext39[2],ext39[3],ext39[4],ext39[5],ext40[2],ext40[3],ext40[4],ext40[5],
ext41[2],ext41[3],ext41[4],ext41[5],ext42[2],ext42[3],ext42[4],ext42[5],ext43[2],ext43[3],ext43[4],ext43[5],ext44[2],ext44[3],ext44[4],ext44[5],ext45[2],ext45[3],ext45[4],ext45[5],
ext46[2],ext46[3],ext46[4],ext46[5],ext47[2],ext47[3],ext47[4],ext47[5],ext48[2],ext48[3],ext48[4],ext48[5],ext49[2],ext49[3],ext49[4],ext49[5],ext50[2],ext50[3],ext50[4],ext50[5],
ext51[2],ext51[3],ext51[4],ext51[5],ext52[2],ext52[3],ext52[4],ext52[5],ext53[2],ext53[3],ext53[4],ext53[5],ext54[2],ext54[3],ext54[4],ext54[5],ext55[2],ext55[3],ext55[4],ext55[5],
ext56[2],ext56[3],ext56[4],ext56[5],ext57[2],ext57[3],ext57[4],ext57[5],ext58[2],ext58[3],ext58[4],ext58[5],ext59[2],ext59[3],ext59[4],ext59[5],ext60[2],ext60[3],ext60[4],ext60[5],
ext61[2],ext61[3],ext61[4],ext61[5],ext62[2],ext62[3],ext62[4],ext62[5],ext63[2],ext63[3],ext63[4],ext63[5],ext64[2],ext64[3],ext64[4],ext64[5],ext65[2],ext65[3],ext65[4],ext65[5],
ext66[2],ext66[3],ext66[4],ext66[5],ext67[2],ext67[3],ext67[4],ext67[5],ext68[2],ext68[3],ext68[4],ext68[5],ext69[2],ext69[3],ext69[4],ext69[5],ext70[2],ext70[3],ext70[4],ext70[5],
ext71[2],ext71[3],ext71[4],ext71[5],ext72[2],ext72[3],ext72[4],ext72[5],ext73[2],ext73[3],ext73[4],ext73[5],ext74[2],ext74[3],ext74[4],ext74[5],ext75[2],ext75[3],ext75[4],ext75[5],
ext76[2],ext76[3],ext76[4],ext76[5],ext77[2],ext77[3],ext77[4],ext77[5],ext78[2],ext78[3],ext78[4],ext78[5],ext79[2],ext79[3],ext79[4],ext79[5],ext80[2],ext80[3],ext80[4],ext80[5],
ext81[2],ext81[3],ext81[4],ext81[5],ext82[2],ext82[3],ext82[4],ext82[5],ext83[2],ext83[3],ext83[4],ext83[5],ext84[2],ext84[3],ext84[4],ext84[5],ext85[2],ext85[3],ext85[4],ext85[5],
ext86[2],ext86[3],ext86[4],ext86[5],ext87[2],ext87[3],ext87[4],ext87[5],ext88[2],ext88[3],ext88[4],ext88[5],ext89[2],ext89[3],ext89[4],ext89[5],ext90[2],ext90[3],ext90[4],ext90[5],
ext91[2],ext91[3],ext91[4],ext91[5],ext92[2],ext92[3],ext92[4],ext92[5],ext93[2],ext93[3],ext93[4],ext93[5],ext94[2],ext94[3],ext94[4],ext94[5],ext95[2],ext95[3],ext95[4],ext95[5],
ext96[2],ext96[3],ext96[4],ext96[5],ext97[2],ext97[3],ext97[4],ext97[5],ext98[2],ext98[3],ext98[4],ext98[5],ext99[2],ext99[3],ext99[4],ext99[5],ext100[2],ext100[3],ext100[4],ext100[5],
ext101[2],ext101[3],ext101[4],ext101[5],ext102[2],ext102[3],ext102[4],ext102[5],ext103[2],ext103[3],ext103[4],ext103[5],ext104[2],ext104[3],ext104[4],ext104[5],ext105[2],ext105[3],ext105[4],ext105[5],
ext106[2],ext106[3],ext106[4],ext106[5],ext107[2],ext107[3],ext107[4],ext107[5],ext108[2],ext108[3],ext108[4],ext108[5],ext109[2],ext109[3],ext109[4],ext109[5],ext110[2],ext110[3],ext110[4],ext110[5],
ext111[2],ext111[3],ext111[4],ext111[5],ext112[2],ext112[3],ext112[4],ext112[5],ext113[2],ext113[3],ext113[4],ext113[5],ext114[2],ext114[3],ext114[4],ext114[5],ext115[2],ext115[3],ext115[4],ext115[5],
ext116[2],ext116[3],ext116[4],ext116[5],ext117[2],ext117[3],ext117[4],ext117[5],ext118[2],ext118[3],ext118[4],ext118[5],ext119[2],ext119[3],ext119[4],ext119[5],ext120[2],ext120[3],ext120[4],ext120[5],
ext121[2],ext121[3],ext121[4],ext121[5],ext122[2],ext122[3],ext122[4],ext122[5],ext123[2],ext123[3],ext123[4],ext123[5],ext124[2],ext124[3],ext124[4],ext124[5],ext125[2],ext125[3],ext125[4],ext125[5],
ext126[2],ext126[3],ext126[4],ext126[5]};

Physical Volume("coil")= {ext1[],ext2[],ext3[],ext4[],ext5[],ext6[],ext7[],ext8[],ext9[],ext10[],
ext11[],ext12[],ext13[],ext14[],ext15[],ext16[],ext17[],ext18[],ext19[],ext20[],
ext21[],ext22[],ext23[],ext24[],ext25[],ext26[],ext27[],ext28[],ext29[],ext30[],
ext31[],ext32[],ext33[],ext34[],ext35[],ext36[],ext37[],ext38[],ext39[],ext40[],
ext41[],ext42[],ext43[],ext44[],ext45[],ext46[],ext47[],ext48[],ext49[],ext50[],
ext51[],ext52[],ext53[],ext54[],ext55[],ext56[],ext57[],ext58[],ext59[],ext60[],
ext61[],ext62[],ext63[],ext64[],ext65[],ext66[],ext67[],ext68[],ext69[],ext70[],
ext71[],ext72[],ext73[],ext74[],ext75[],ext76[],ext77[],ext78[],ext79[],ext80[],
ext81[],ext82[],ext83[],ext84[],ext85[],ext86[],ext87[],ext88[],ext89[],ext90[],
ext91[],ext92[],ext93[],ext94[],ext95[],ext96[],ext97[],ext98[],ext99[],ext100[],
ext101[],ext102[],ext103[],ext104[],ext105[],ext106[],ext107[],ext108[],ext109[],ext110[],
ext111[],ext112[],ext113[],ext114[],ext115[],ext116[],ext117[],ext118[],ext119[],ext120[],
ext121[],ext122[],ext123[],ext124[],ext125[],ext126[]};

[JinBiao]

3 errors when I checkMesh.

Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
    points:           435825
    faces:            2041712
    internal faces:   1924688
    cells:            793280
    boundary patches: 4
    point zones:      0
    face zones:       0
    cell zones:       1

Overall number of cells of each type:
    hexahedra:     0
    prisms:        793280
    wedges:        0
    pyramids:      0
    tet wedges:    0
    tetrahedra:    0
    polyhedra:     0

Checking topology...
    Boundary definition OK.
    Point usage OK.
    Upper triangular ordering OK.
    Face vertices OK.
    Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces ...
    Patch               Faces    Points   Surface topology                  
    inlet               592      325      ok (non-closed singly connected)  
    outlet              592      325      ok (non-closed singly connected)  
    coilInnerSurface    68680    75096    ok (non-closed singly connected)  
    defaultFaces        47160    36727    multiply connected (shared edge)  
  <<Writing 19438 conflicting points to set nonManifoldPoints

Checking geometry...
    Overall domain bounding box (-0.0082265 -0.0218 -0.0082265) (0.0082265 0.092605 0.0082265)
    Mesh (non-empty, non-wedge) directions (1 1 1)
    Mesh (non-empty) directions (1 1 1)
    Boundary openness (-2.89129e-09 -1.27362e-08 2.17817e-09) OK.
 ***Open cells found, max cell openness: 0.633005, number of open cells 9126
  <<Writing 9126 non closed cells to set nonClosedCells
  <<Writing 2400 cells with high aspect ratio to set highAspectRatioCells
    Minumum face area = 1.53247e-12. Maximum face area = 2.29522e-07.  Face area magnitudes OK.
    Min volume = 1.66667e-300. Max volume = 1.03492e-11.  Total volume = 3.4394e-06.  Cell volumes OK.
    Mesh non-orthogonality Max: 176.879 average: 14.7507
   *Number of severely non-orthogonal faces: 2400.
 ***Number of non-orthogonality errors: 5409.
  <<Writing 7809 non-orthogonal faces to set nonOrthoFaces
 ***Error in face pyramids: 28094 faces are incorrectly oriented.
  <<Writing 23285 faces with incorrect orientation to set wrongOrientedFaces
    Max skewness = 3.76412 OK.

Failed 3 mesh checks.

End

[JinBiao]

The problem has been solved. The reason was that I clicked the "refine" button when building the mesh.