# pour two types of particles (cohesive and non-cohesive) on flat wall

variable        name string pour_two_types

atom_style      sphere
units           lj

###############################################
# Geometry-related parameters
###############################################

variable        boxx equal 20
variable        boxy equal 20
variable        boxz equal 30

variable        xc1 equal 0.3*${boxx}
variable        xc2 equal 0.7*${boxx}
variable        yc equal 0.5*${boxy}

###############################################
# Particle-related parameters
###############################################
variable        rlo equal 0.25
variable        rhi equal 0.5
variable        dlo equal 2.0*${rlo}
variable        dhi equal 2.0*${rhi}

variable        dens equal 1.0

variable skin equal 0.3*${rhi}

#############
processors      * * 1
region          boxreg block 0 ${boxx} 0 ${boxy} 0 ${boxz}
create_box      2 boxreg
change_box      all boundary p p f

pair_style      granular
pair_coeff      1 * jkr 1000.0 50.0 0.3 10 tangential mindlin 800.0 1.0 0.5 rolling sds 500.0 200.0 0.5 twisting marshall
pair_coeff      2 2 hertz 200.0 20.0 tangential linear_history 300.0 1.0 0.1 rolling sds 200.0 100.0 0.1 twisting marshall

comm_modify     vel yes

region          insreg1 cylinder z ${xc1} ${yc} 5 15 ${boxz}
region          insreg2 cylinder z ${xc2} ${yc} 5 15 ${boxz}

fix             1 all nve/sphere
fix             grav all gravity 10.0 vector 0 0 -1
fix             ins1 all pour 1500 1 3123 region insreg1 diam range ${dlo} ${dhi} dens ${dens} ${dens}
fix             ins2 all pour 1500 2 3123 region insreg2 diam range ${dlo} ${dhi} dens ${dens} ${dens}

neighbor        ${skin} bin
neigh_modify    delay 0 every 1 check yes

fix             3 all wall/gran granular hertz/material 1e5 1e3 0.3 tangential mindlin NULL 1.0 0.5 zplane 0 NULL

thermo_style    custom step atoms ke
thermo_modify   lost warn
thermo          100

timestep        0.001

#dump           1 all custom 100 ${name}.dump id type radius mass x y z

run             5000