# material model
eos
   cubic_grueneisen
      5.386 1.339 0.0 0.0
      1.97 0.48
      2.707

2.707 0.0 # ref state (rho, e)

# grad u
-1.0 0.0 0.0
 0.0 0.0 0.0
 0.0 0.0 0.0

0.01 # dt
100 # nsteps