Acoustics equations with standing-wave data, solid walls at x = 0, x = 1, as specified in setrun.py.
Example [book/chap7/standing] to accompany the book Finite Volume Methods for Hyperbolic Problems by R. J. LeVeque.
Note that cfl_desired is set to 1 in setrun.py, and in this case even the first order Godunov method is "exact".
Converted to Clawpack 5.0 form in 2013.
Converted to Clawpack 5.4.0 form in 2017.