Merge pull request #2034 from gforney/master

add a test case to generate large slice files

vistest/large/plume001/plume001.fds

@@ -0,0 +1,31 @@
+&HEAD CHID='plume001',TITLE='Plume whirl case' /
+
+&MESH IJK=64,64,64, XB=0.0,1.6,0.0,1.6,0.0,1.6/
+
+&DUMP NFRAMES=1000 DT_SL3D=0.01 /
+
+&INIT XB=0.2,1.4,0.2,1.4,0.2,1.4  TEMPERATURE=600.0 /
+
+&TIME T_END=50. /  Total simulation time
+
+&REAC SOOT_YIELD=0.01,FUEL='PROPANE'/
+
+&SURF ID='BURNER',HRRPUA=600.0,PART_ID='tracers' /  Ignition source
+&VENT XB=0.5,1.1,0.5,1.1,0.1,0.1,SURF_ID='BURNER' /  fire source on kitchen stove
+&OBST XB=0.5,1.1,0.5,1.1,0.0,0.1 /
+
+&VENT MB='XMIN', SURF_ID='OPEN' /
+&VENT MB='XMAX', SURF_ID='OPEN' /
+&VENT MB='YMIN', SURF_ID='OPEN' /
+&VENT MB='YMAX', SURF_ID='OPEN' /
+&VENT MB='ZMAX', SURF_ID='OPEN' /
+
+&PART ID='tracers',MASSLESS=.TRUE.,
+   QUANTITIES(1:3)='PARTICLE U','PARTICLE V','PARTICLE W'
+   SAMPLING_FACTOR=10 /  Description of massless tracer particles. Apply at a
+                                                             solid surface with the PART_ID='tracers'
+
+&SLCF PBY=0.8,QUANTITY='TEMPERATURE' /
+&SLCF XB=0.0,1.6,0.0,1.6,0.0,1.6, QUANTITY='TEMPERATURE' /
+
+&TAIL /