Re: [Gmsh] 3D interconnection of structured and unstructured grids

[Ruth V. Sabariego]

You can use Gmsh but you must force the Frontal algorithm. Options->Mesh->General->3D algorithm->Frontal You can also force the algorithm in the geo file with Mesh.Algorithm3D=4; Have a loop at the attached example Mesh.Algorithm3D = 4 ; Regards, Ruth On 31/03/11 18:21, Nolwenn de Carlan wrote: Hello everybody, I try to connect a structured grid with an unstructured one in 3D, without any success for the moment... (I found in the archives something concerning the same question, but it is from March 2000) Can gmsh do this? If yes, how can this be done? If no, can someone tell me if there is another tool to create hybrid 3D mesh ? Best regards Nolwenn _______________________________________________ gmsh mailing list gmsh@geuz.org http://www.geuz.org/mailman/listinfo/gmsh -- Dr. Ir. Ruth V. Sabariego University of Liege, Dept. of Electrical Engineering & Computer Science, Applied & Computational Electromagnetics (ACE), phone: +32-4-3663737 - fax: +32-4-3662910 - http://ace.montefiore.ulg.ac.be/

Mesh.Algorithm3D = 4 ;

lc = .2 ;
x = .0;                                  
Point(1) = {0,0,0,lc};                                          
Point(2) = {1,0,0,lc};                                          
Point(3) = {1,1,0,lc};                                          
Point(4) = {0,1,0,lc};                                          
Line(1) = {4,3};                                          
Line(2) = {3,2};                                          
Line(3) = {2,1};                                          
Line(4) = {1,4};                                          

Line Loop(5) = {2,3,4,1};                                          
Plane Surface(6) = {5};                                          
ndiv = 10 ; Transfinite Line{1:4} = ndiv ;
Transfinite Surface{6};

Extrude {0,0.0,1}{ Surface{6}; Layers {ndiv};
 //Recombine;
}

Dilate {{.5, .5, .5}, 2} {
  Duplicata{Surface{6};}
}

Extrude {0,0.0,2}{ Surface{29};}
Delete{Volume{2};}

Surface Loop(56) = {55, 42, 29, 46, 50, 54};
Surface Loop(57) = {28, 15, 6, 19, 23, 27};
Volume(58) = {56, 57};

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