Creation of a simple geometry using Gmsh
========================================

:Author: Juan Gómez
:Date: October, 2017

We want to create a mesh for the following geometry

.. figure:: ../img/template_schematic.png
   :alt: Bilayer model.

   Bilayer model.

The ``.geo`` file for this model is the following

.. code:: c

    // Parameters
    L = 2.0;
    H = 1.0;
    h_1 = H/2;
    h_2 = H/2;
    lado_elem = 0.1;


    // Points
    Point(1) = {0.0, 0.0, 0, lado_elem};
    Point(2) = {L, 0.0, 0, lado_elem};
    Point(3) = {L, h_2, 0, lado_elem};
    Point(4) = {L, H, 0, lado_elem};
    Point(5) = {0, H, 0, lado_elem};
    Point(6) = {0, h_2, 0, lado_elem};

    // Lines
    Line(1) = {1, 2};
    Line(2) = {2, 3};
    Line(3) = {3, 4};
    Line(4) = {4, 5};
    Line(5) = {5, 6};
    Line(6) = {6, 1};
    Line(7) = {3, 6};

    // Surfaces
    Line Loop(8) = {1, 2, 7, 6};
    Plane Surface(9) = {8};
    Line Loop(10) = {-7, 5, 4, 3};
    Plane Surface(11) = {10};

    // Physical groups
    Physical Surface(100) = {9};  // Material superior
    Physical Surface(200) = {11};  // Material inferior
    Physical Line(300) = {5, 6, 3, 2};  // Lineas laterales
    Physical Line(400) = {1};  // Linea inferior
    Physical Line(500) = {4};  // Linea superior (cargas)