.. _V4.21.100: **v4.21.100** TTLL100 - Thermal shock on a flat wall with exchange condition ================================================================================ **Summary:** This transient linear thermal test consists in imposing a cold thermal shock on an infinite plane wall using an exchange limit condition. The shock is modelled by a linear ramp :math:`\Delta T\mathrm{=}–100°C` in :math:`{10}^{\mathrm{-}2}s`. The problem is dealt with in plan. The reference solution is analytical. The test is carried out on 2 models: (TRIA3, QUAD4) and (TRIA6, QUAD9). We test the transient linear thermal algorithm when the mass matrix is diagonalized (modeling PLAN_DIAG with "mass lumping"). .. toctree:: :hidden: self .. toctree:: :maxdepth: 2 :numbered: Probl_me_de_r_f_rence Solution_de_r_f_rence Mod_lisation_A Mod_lisation_B Synth_se_des_r_sultats