def irradiate_disk_with_bump(Mstar=10 | units.MSun,
tstar=20 | units.Myr,
Ndisk=100,
Mdisk=0.9 | units.MSun,
Rmin=1.0 | units.AU,
Rmax=100.0 | units.AU,
Mbump=0.1 | units.MSun,
Rbump=10.0 | units.AU,
abump=10 | units.AU,
t_end=10 | units.yr,
n_steps=10):
dt = t_end / float(n_steps)
stellar = SeBa()
stellar.particles.add_particle(Particle(mass=Mstar))
stellar.evolve_model(tstar)
source = Particles(1)
source.mass = stellar.particles[0].mass
source.position = (0, 0, 0) | units.AU
source.velocity = (0, 0, 0) | units.kms
source.luminosity = stellar.particles[0].luminosity / (20. | units.eV)
source.temperature = stellar.particles[0].temperature
Teff = stellar.particles[0].temperature
source.flux = source.luminosity
source.rho = 1.0 | (units.g / units.cm**3)
source.xion = 0.0 #ionization_fraction
source.u = (9. | units.kms)**2 #internal_energy
stellar.stop()
ism = new_disk_with_bump(source[0].mass, Ndisk, Mdisk, Rmin, Rmax, Mbump,
Rbump, abump)
ism.flux = 0 | units.s**-1
ism.xion = 0.0 #ionization_fraction
hydro = Gadget2(nbody_system.nbody_to_si(Mdisk, Rmax))
hydro.gas_particles.add_particles(ism)
hydro.dm_particles.add_particles(source)
hydro.evolve_model(1 | units.day)
hydro.gas_particles.new_channel_to(ism).copy()
hydro.stop()
rad = SimpleXSplitSet(redirect="none", numer_of_workers=4)
rad.parameters.box_size = 2.01 * Rmax
rad.parameters.timestep = 0.1 * dt
rad.set_source_Teff(Teff)
rad.src_particles.add_particle(source)
rad.gas_particles.add_particles(ism)
rad_to_framework = rad.gas_particles.new_channel_to(ism)
particles = ParticlesSuperset([source, ism])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
while rad.model_time < t_end:
rad.evolve_model(rad.model_time + dt)
rad_to_framework.copy_attributes(["x", "y", "z", "xion"])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
print "Time=", rad.model_time, "Ionization (min, mean, max):", ism.xion.min(
), ism.xion.mean(), ism.xion.max()
rad.stop()
def irradiate_disk_with_bump(Mstar = 10|units.MSun, tstar = 20|units.Myr,
Ndisk=100, Mdisk=0.9|units.MSun,
Rmin=1.0|units.AU, Rmax=100.0|units.AU,
Mbump=0.1|units.MSun, Rbump=10.0|units.AU,
abump=10|units.AU,
t_end=10|units.yr, n_steps=10,
filename = None, image_id=1):
dt = t_end/float(n_steps)
stellar = SeBa()
stellar.particles.add_particle(Particle(mass=Mstar))
stellar.evolve_model(tstar)
source=Particles(1)
source.mass = stellar.particles[0].mass
source.position = (0, 0, 0) |units.AU
source.velocity = (0, 0, 0) |units.kms
source.luminosity = stellar.particles[0].luminosity/(20. | units.eV)
source.temperature = stellar.particles[0].temperature
Teff = stellar.particles[0].temperature
source.flux = source.luminosity
source.rho = 1.0|(units.g/units.cm**3)
source.xion = 0.0 #ionization_fraction
source.u = (9. |units.kms)**2 #internal_energy
stellar.stop()
ism = new_disk_with_bump(source[0].mass, Ndisk, Mdisk, Rmin, Rmax,
Mbump, Rbump, abump)
ism.flux = 0 | units.s**-1
ism.xion = 0.0 #ionization_fraction
hydro = Gadget2(nbody_system.nbody_to_si(Mdisk, Rmax))
hydro.gas_particles.add_particles(ism)
hydro.dm_particles.add_particles(source)
hydro.evolve_model(1|units.day)
hydro.gas_particles.new_channel_to(ism).copy()
hydro.stop()
rad = SimpleXSplitSet(redirect="none",numer_of_workers=4)
rad.parameters.box_size=2.01*Rmax
rad.parameters.timestep=0.1*dt
rad.set_source_Teff(Teff)
rad.src_particles.add_particle(source)
rad.gas_particles.add_particles(ism)
rad_to_framework = rad.gas_particles.new_channel_to(ism)
particles = ParticlesSuperset([source, ism])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
while rad.model_time<t_end:
rad.evolve_model(rad.model_time + dt)
rad_to_framework.copy_attributes(["x","y", "z", "xion"])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
print "Time=", rad.model_time, "Ionization (min, mean, max):", ism.xion.min(), ism.xion.mean(), ism.xion.max()
rad.stop()
def _irradiate_disk_with_pump(Mstar = 10|units.MSun,
tstar = 20|units.Myr,
Ndisk=100, Mdisk=0.9|units.MSun,
Rmin=1.0|units.AU, Rmax=100.0|units.AU,
Mbump=0.1|units.MSun,Rbump=10.0|units.AU, abump=10|units.AU,
t_end=10|units.yr, n_steps=10, filename = None, image_id=1):
model_time = 0.0 | t_end.unit
dt = t_end/float(n_steps)
ionization_fraction = 0.0
internal_energy = (9. |units.kms)**2
stellar = SeBa()
stellar.particles.add_particle(Particle(mass=Mstar))
stellar.evolve_model(tstar)
print "L=", stellar.particles[0].luminosity.in_(units.LSun), stellar.particles[0].temperature
source=Particles(1)
source.mass = stellar.particles[0].mass
source.position = (0, 0, 0) |units.AU
source.velocity = (0, 0, 0) |units.kms
source.luminosity = stellar.particles[0].luminosity/(20. | units.eV)
source.temperature = stellar.particles[0].temperature
Teff = stellar.particles[0].temperature
source.flux = source.luminosity
source.rho = 1.0|(units.g/units.cm**3)
source.xion = ionization_fraction
source.u = internal_energy
stellar.stop()
Mstar = source[0].mass
if filename ==None:
ism = new_disk_with_bump(Mstar = Mstar,
Ndisk=Ndisk, Mdisk=Mdisk,
Rmin=Rmin, Rmax=Rmax,
Mbump=Mbump, Rbump=Rbump,
abump=abump)
else:
ism = read_disk_with_bump(image_id=image_id, filename=filename)#, Rmax=Rmax)
ism = ism.select(lambda r: r.length()<1.0*Rmax,["position"])
ism.flux = 0 | units.s**-1
ism.xion = ionization_fraction
if filename ==None:
converter=nbody_system.nbody_to_si(Mdisk, Rmax)
hydro = Gadget2(converter)
hydro.gas_particles.add_particles(ism)
hydro.dm_particles.add_particles(source)
hydro.evolve_model(1|units.day)
hydro.gas_particles.new_channel_to(ism).copy()
hydro.stop()
rad = SimpleXSplitSet(redirect="none",numer_of_workers=4)
rad.parameters.number_of_freq_bins=5
rad.parameters.thermal_evolution_flag=1
rad.parameters.blackbody_spectrum_flag=1
rad.parameters.metal_cooling_flag=0
rad.parameters.box_size=2.01*Rmax
if isinstance(rad, SPHRay):
ism.h_smooth = 0.1 | (units.RSun)
else:
rad.parameters.timestep=0.1*dt
rad.set_source_Teff(Teff)
rad.src_particles.add_particle(source)
rad.gas_particles.add_particles(ism)
channel_from_rad_to_framework = rad.gas_particles.new_channel_to(ism)
particles = ParticlesSuperset([source, ism])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
tCPU = time()
while model_time<t_end:
model_time += dt
rad.evolve_model(model_time)
channel_from_rad_to_framework.copy_attributes(["x","y", "z", "xion"])
write_set_to_file(particles, "rad.hdf5", 'hdf5')
print "Date:"+str(localtime()[2])+"."+str(localtime()[1])+"."+str(localtime()[1]), "at", str(localtime()[3])+"h", str(localtime()[4])+"m"
print "Time=", model_time, "dt_CPU=", time()-tCPU
print "min ionization:", ism.xion.min()
print "average Xion:", ism.xion.mean()
print "max ionization:", ism.xion.max()
tCPU = time()
rad.stop()