update convection inputs (#338)

this is now periodic on the sides
adds a small_dens
and a new inputs that is twice as wide

Author: zingale

pyro/compressible/problems/inputs.convection

@@ -2,7 +2,7 @@
 
 [driver]
 max_steps = 10000
-tmax = 10.0
+tmax = 25.0
 
 
 [io]
@@ -17,8 +17,8 @@ ny = 384
 xmax = 4.0
 ymax = 12.0
 
-xlboundary = outflow
-xrboundary = outflow
+xlboundary = periodic
+xrboundary = periodic
 
 ylboundary = reflect
 yrboundary = ambient
@@ -39,3 +39,5 @@ do_sponge = 1
 grav = -2.0
 
 limiter = 2
+
+small_dens = 1.e-4

pyro/compressible/problems/inputs.convection.big

@@ -0,0 +1,43 @@
+# simple inputs files for the four-corner problem.
+
+[driver]
+max_steps = 10000
+tmax = 25.0
+
+
+[io]
+basename = convection_
+n_out = 100000000
+dt_out = 0.5
+
+
+[mesh]
+nx = 256
+ny = 384
+xmax = 8.0
+ymax = 12.0
+
+xlboundary = periodic
+xrboundary = periodic
+
+ylboundary = reflect
+yrboundary = ambient
+
+
+[convection]
+scale_height = 2.0
+dens_base = 1000.0
+dens_cutoff = 1.e-3
+
+e_rate = 0.5
+
+
+[sponge]
+do_sponge = 1
+
+[compressible]
+grav = -2.0
+
+limiter = 2
+
+small_dens = 1.e-4