Exemplo n.º 1
0
                                                   shift="auto")
system.nonBondedInter.setForceCap(lj_cap)

print("LJ-parameters:")
print(system.nonBondedInter[0, 0].lennardJones.getParams())

# Particle setup
#############################################################

volume = box_l * box_l * box_l
n_part = int(volume * density)

for i in range(n_part):
    system.part[i].pos = numpy.random.random(3) * system.box_l

analyze.distto(system, 0)

print(
    "Simulate {} particles in a cubic simulation box {} at density {}.".format(
        n_part, box_l, density).strip())
print("Interactions:\n")
act_min_dist = analyze.mindist(es)
print("Start with minimal distance {}".format(act_min_dist))

system.max_num_cells = 2744

# Assingn charge to particles
for i in range(n_part / 2 - 1):
    system.part[2 * i].q = -1.0
    system.part[2 * i + 1].q = 1.0
# P3M setup after charge assigned
Exemplo n.º 2
0
    epsilon=lj_eps, sigma=lj_sig,
    cutoff=lj_cut, shift="auto")
system.non_bonded_inter.set_force_cap(lj_cap)

print(system.non_bonded_inter[0, 0].lennard_jones.get_params())

# Particle setup
#############################################################

volume = box_l * box_l * box_l
n_part = int(volume * density)

for i in range(n_part):
    system.part.add(id=i, pos=numpy.random.random(3) * system.box_l)

analyze.distto(system, 0)

print("Simulate {} particles in a cubic simulation box {} at density {}."
      .format(n_part, box_l, density).strip())
print("Interactions:\n")
act_min_dist = analyze.mindist(es)
print("Start with minimal distance {}".format(act_min_dist))

system.max_num_cells = 2744


# Assingn charge to particles
for i in range(n_part / 2 - 1):
    system.part[2 * i].q = -1.0
    system.part[2 * i + 1].q = 1.0