alomar_jsv21_code1.m
FDTD code for the 1D test case - reflexion and transmission on an interface between two semi-infinite fluid media. 
Routine for the convergence study as the time step is reduced. It can be used for plotting Figs. 9-12. 


alomar_jsv21_code2.m
FDTD code for the 1D test case - reflexion and transmission on an interface between two semi-infinite fluid media.
Routine for a single simulation. It can be used for plotting Fig. 8.


alomar_jsv21_movie1.avi
Pressure fluctuations in a duct without mean flow (top) with a small
and deep cavity and (bottom) with a long and shallow cavity filled  (left) with an aluminum foam
and (right) with a metamaterial.


alomar_jsv21_movie2.avi
Pressure fluctuations in a duct without mean flow (left) with a small and deep cavity and
(right) with a long and shallow cavity filled with an aluminum foam (top) accounting for propagation inside
the material and (bottom) modeling the liner by a surface impedance.


alomar_jsv21_movie3.avi
Pressure fluctuations in a duct with a mean flow of Mach number 0.2 (top) with a small
and deep cavity and (bottom) with a long and shallow cavity filled with an aluminum foam
obtained by solving the LEE (left) without the GTS method and (right) with the GTS method.