fix output of kinetic energy in settling test

in case of a single particle, we need to specify the option 'extra 0';
since we just create one particle at the start of the simulation, we can
also set 'dynamic' to 'no';

Author: danielque

tutorials/cfdemSolverPiso/settlingTestMPI/DEM/in.liggghts_run

@@ -24,7 +24,6 @@ fix         m1 all property/global youngsModulus peratomtype 5.e6
 fix         m2 all property/global poissonsRatio peratomtype 0.45
 fix         m3 all property/global coefficientRestitution peratomtypepair 1 0.3
 fix         m4 all property/global coefficientFriction peratomtypepair 1 0.5
-#fix         m5 all property/global characteristicVelocity scalar 2.0
 
 # pair style
 pair_style  gran model hertz tangential history
@@ -64,7 +63,7 @@ compute         rke all erotate/sphere
 thermo_style    custom step atoms ke c_rke vol
 thermo          1000
 thermo_modify   lost ignore norm no
-compute_modify  thermo_temp dynamic yes
+compute_modify  thermo_temp dynamic no extra 0
 
 # insert the first particles so that dump is not empty
 run     1