In this example we use CentPack's one-dimensional second order semi-discrete formulation, centpack_1d_SD2, to evolve the solution of Euler's equations of gas dynamics
where the pressure, p, is related to the conserved quantities through the equation of state
with . The solution is evolved over the interval , from to . The initial conditions are those of a Sod shock tube
and Dirichlet boundary conditions (i.e., the conserved quantities take on the values specified by the initial conditions at either boundary). Solution computed with 400 cells and cfl number 0.75.
The images below display, from top to bottom and left to right, the profiles of density, x-velocity, and pressure at . Click on the individual images to see an animation from to
Click on the images above to see an animation
The files implementing this exaple are included in the current CentPack distribution, CP-1.0.0. Read here how to run and compile this example.