Added some cells to default pipeflow config

sim/examples/pipe_flow/300X600/config

 #CONFIG GENERATED BY GR_VALIDATION
 datapath  './data/hdf5/'
-domainppm '/home/HemoCell2D/sim/geom/preinlet_300_600.ppm'
+domainppm './preinlet_300_600.ppm'
 casepath  './'
 tmax  10000
 tmeas  1000
@@ -15,8 +15,8 @@ ctrs 0.74e-9
 cvol 7.25e4
 tcell 1
 chinge 1.0e-1
-ct1_ratio 0.0
-ct2_ratio 0.0e0
+ct1_ratio 0.4
+ct2_ratio 0.1e0
 lspradius 0.3
 width 300
 re 3.57