B modeling ============== Characteristics of modeling ------------------------ We use a PLAN model. Characteristics of the mesh ---------------------------- A convergence study is carried out with the fineness of the mesh from the calculated solution to the analytical solution. A series of meshes obtained by uniform refinement using the MACR_ADAP_MAIL command is used: * mesh 0:4 SEG3, 2 TRIA6 * mesh 1:8 SEG3, 8 TRIA6 * mesh 2:16 SEG3, 32 TRIA6 * mesh 3:32 SEG3, 128 TRIA6 Tested sizes and results ------------------------------ The convergence speed is tested with the fineness of the mesh from the calculated solution to the analytical solution in standard :math:`{L}_{2}`, i.e. the greatest real :math:`\alpha >0` such as :math:`{\mathrm{\parallel }{T}^{\text{calc}}\mathrm{-}{T}^{\text{ref}}\mathrm{\parallel }}_{\mathrm{0,}\Omega }