Quickstart guide with example input file¶

#!/bin/sh

# Reactions discovery example for a mixutre of CH3CH2 and OH radicals
# The mixture should form ethanol CH3CH2OH and hydrogen peroxide HOOH
# and possibly more products.

rm -rf complete_nanoreactor.results

AMS_JOBNAME=complete_nanoreactor $AMSBIN/reactions_discovery << eor
   MolecularDynamics
      Enabled Yes
      NumSimulations 4
      BuildSystem
         NumAtoms 50
         Density 0.9
         Molecule 
            SMILES C[CH2]  # a CH3CH2 radical
            MoleFraction 1
         End
         Molecule 
            SMILES [OH]   # an OH radical
            MoleFraction 3
         End
      End
      Type NanoReactor
      NanoReactor
         NumCycles 5
         Temperature 500
         MinVolumeFraction 0.6
      End
      BondOrders Method=Guess
   End

   NetworkExtraction Enabled=Yes UseCharges=Yes
   ProductRanking Enabled=Yes

   Engine ReaxFF
      ForceField CHON-2019.ff
      TaperBO Yes
   EndEngine
eor

#Test if ethanol is found:
echo ETHANOL: `grep -c " CCO " complete_nanoreactor.results/reactions_discovery.log`
#Test if hydrogen peroxide is found:
echo HYDROGEN PEROXIDE: `grep -c " OO " complete_nanoreactor.results/reactions_discovery.log`

# Use the MD trajectories from the previous job
rm -rf restart_extraction.results
AMS_JOBNAME=restart_extraction $AMSBIN/reactions_discovery << eor
    MolecularDynamics Enabled=No
    NetworkExtraction Enabled=Yes MDTrajectories=complete_nanoreactor.results
    ProductRanking Enabled=Yes
    Engine ReaxFF
        ForceField CHON-2019.ff
        TaperBO Yes
    EndEngine
eor

#Test if ethanol is found:
echo ETHANOL: `grep -c " CCO " restart_extraction.results/reactions_discovery.log`
#Test if hydrogen peroxide is found:
echo HYDROGEN PEROXIDE: `grep -c " OO " restart_extraction.results/reactions_discovery.log`

# Use the previous NetworkExtraction results to restart the ranking
rm -rf restart_ranking.results
AMS_JOBNAME=restart_ranking $AMSBIN/reactions_discovery << eor
    MolecularDynamics Enabled=No
    NetworkExtraction Enabled=No
    ProductRanking Enabled=Yes ReactionNetwork=restart_extraction.results
eor

#Test if ethanol is found:
echo ETHANOL: `grep -c " CCO " restart_ranking.results/reactions_discovery.log`
#Test if hydrogen peroxide is found:
echo HYDROGEN PEROXIDE: `grep -c " OO " restart_ranking.results/reactions_discovery.log`

# Demonstrate LatticeDeformation
rm -rf complete_lattice_deformation.results

AMS_JOBNAME=complete_lattice_deformation $AMSBIN/reactions_discovery << eor
   MolecularDynamics
      Enabled Yes
      NumSimulations 2
      BuildSystem
         NumAtoms 50
         Density 0.4
         Molecule 
            SMILES C[CH2]  # a CH3CH2 radical
            MoleFraction 1
         End
         Molecule 
            SMILES [OH]   # an OH radical
            MoleFraction 3
         End
      End
      Type LatticeDeformation
      LatticeDeformation
         NumCycles 3
         Temperature 500
         MinVolumeFraction 0.2
         Period 200
      End
      BondOrders Method=Guess
   End

   NetworkExtraction Enabled=Yes UseCharges=No
   ProductRanking Enabled=Yes

   Engine ReaxFF
      ForceField CHON-2019.ff
      TaperBO Yes
   EndEngine
eor

#Test if ethanol is found:
echo ETHANOL: `grep -c " CCO " complete_lattice_deformation.results/reactions_discovery.log`
#Test if hydrogen peroxide is found:
echo HYDROGEN PEROXIDE: `grep -c " OO " complete_lattice_deformation.results/reactions_discovery.log`