.. _step8_section:


STEP 8 : Compute a vertical shock tube
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This is the ultimate stage to obtain a 2D code. One has to extend the initial condition treatment as well as the boundary condition one to obtain a 2 code. So, the modifications imply the INITGAZ and LIMGAZ. Moreover, take care about the timestep calculation! 

To check the solution, compute the same shock tube problem as the 1D case (by using *solref* file. The comparison the 1D results in *x*\-direction and the 2D results in the *y*\-direction must be perfect!