Structured Triangular Type of Mesh of "T" section

[D_N_Sarkar]

I would like to mesh a “T” type of geometry as follows:

How can I mesh it using structured triangular type of mesh?

Can the command “square” be used to mesh the above “T” type of geometry?

[julienG (Julien)]

If you insist on having a structured mesh, you can glue 2 rectangles

mesh Th1 = square(30,10,[3* x,y]);
mesh Th2 = square(10,30,[x+1,2* y-2]);
mesh Th=Th1+Th2;
plot(Th,fill=1);

but you’ll have to choose carefully the number of points so the the vertices on the common edge coincide…

[D_N_Sarkar]

Ok. But what are the numbers of the boundaries? It is required for assigning boundary conditions.

[Emma87 (Emmanuel Yarleque Medina)]

Hi D_N_Sarkar, can you see:

How can i make a T-shaped mesh

Hi Daniela, You should generate the mesh counterclockwise, see the following example: // border A(t=0,0.5){x=2+t;y=0; label=1;}; border B(t=0,2.5){x=2.5;y=t;label=2;}; border C(t=0,0.5){x=2.5+t;y=2.5;label=3;}; border D(t=0,0.5){x=3;y=2.5+t;label=4;}; border E(t=0,1){x=3-1.5*t;y=3;label=5;}; border F(t=0,0.5){x=1.5;y=3-t;label=6;}; border G(t=0,0.5){x=1.5+t;y=2.5;label=7;}; border H(t=0,2.5){x=2;y=2.5-t;label=8;}; int n=10; mesh Th=buildmesh(A(n)+ B(n)+ C(n)+ D(n)+ E(n)+ F(n)+ G(n)+ …