import numpy as np
import os
import salvus.namespace as sn
# Run simulations on this site.
SALVUS_FLOW_SITE_NAME = os.environ.get("SITE_NAME", "local")
# Either load an existing project or create a new one.
p = sn.Project.from_domain(
path="project",
# Should match the volume model.
domain=sn.domain.dim2.BoxDomain(x0=0, x1=3000, y0=-1000, y1=0),
load_if_exists=True,
)
bm
model file.%%writefile layered_model.bm
NAME radial_model
ACOUSTIC true
UNITS m
COLUMNS depth rho vp
0.0 1000.0 1500.0
200.0 1000.0 1500.0
200.0 1300.0 1900.0
500.0 1300.0 1900.0
500.0 2200.0 3200.0
4000.0 2200.0 3200.0
Writing layered_model.bm
%%writefile layered_model_ani.bm
NAME radial_model
ACOUSTIC true
ANISOTROPIC true
UNITS m
COLUMNS depth rho vpv vph
0.0 1000.0 1500.0 1500.0
200.0 1000.0 1500.0 1500.0
200.0 1300.0 1900.0 2100.0
500.0 1300.0 1900.0 2100.0
500.0 2200.0 3200.0 3500.0
4000.0 2200.0 3200.0 3500.0
Writing layered_model_ani.bm
VPV
and VPH
.%%writefile layered_model_fake_ani.bm
NAME radial_model
ACOUSTIC true
ANISOTROPIC true
UNITS m
COLUMNS depth rho vpv vph
0.0 1000.0 1500.0 1500.0
200.0 1000.0 1500.0 1500.0
200.0 1300.0 1900.0 1900.0
500.0 1300.0 1900.0 1900.0
500.0 2200.0 3200.0 3200.0
4000.0 2200.0 3200.0 3200.0
Writing layered_model_fake_ani.bm
for name, bm in zip(
["isotropic", "anisotropic", "fake-anisotropic"],
["layered_model.bm", "layered_model_ani.bm", "layered_model_fake_ani.bm"],
):
p.add_to_project(
sn.SimulationConfiguration(
name=name,
max_frequency_in_hertz=20.0,
elements_per_wavelength=1.5,
model_configuration=sn.ModelConfiguration(
background_model=sn.model.background.one_dimensional.FromBm(
filename=bm, reference_datum=0.0
),
),
event_configuration=sn.EventConfiguration(
wavelet=sn.simple_config.stf.Ricker(center_frequency=10.0),
waveform_simulation_configuration=sn.WaveformSimulationConfiguration(
end_time_in_seconds=1.5,
),
),
absorbing_boundaries=sn.AbsorbingBoundaryParameters(
reference_velocity=2200.0,
reference_frequency=10.0,
number_of_wavelengths=7,
),
),
)
p.viz.nb.simulation_setup("anisotropic")
[2024-07-02 14:09:00,679] INFO: Creating mesh. Hang on.
<salvus.mesh.data_structures.unstructured_mesh.unstructured_mesh.UnstructuredMesh object at 0x7f037d302510>
UnstructuredMeshSimulationConfiguration
.def convert_thomsen_params_to_vti_tensor(
dim: int,
rho: np.ndarray,
vp: np.ndarray,
delta: np.ndarray,
epsilon: np.ndarray,
):
if dim == 2:
model = {
"M0": 1 / (vp**2 * rho),
"D11": (1 + 2 * epsilon) / rho,
"D12": (delta - epsilon) / rho,
"D22": 1 / rho,
}
elif dim == 3:
model = {
"M0": 1 / (vp**2 * rho),
"D11": (1 + 2 * epsilon) / rho,
"D12": np.zeros_like(rho),
"D13": (delta - epsilon) / rho,
"D22": (1 + 2 * epsilon) / rho,
"D23": (delta - epsilon) / rho,
"D33": 1 / rho,
}
return model
def interpolate_vti_model_onto_mesh(mesh: sn.UnstructuredMesh):
if "VPV" in mesh.elemental_fields.keys():
vti_model = convert_thomsen_params_to_vti_tensor(
dim=2,
rho=mesh.elemental_fields["RHO"],
vp=mesh.elemental_fields["VPV"],
delta=0.5
* (
mesh.elemental_fields["VPH"] ** 2
/ mesh.elemental_fields["VPV"] ** 2
- 1.0
),
epsilon=0.5
* (
mesh.elemental_fields["VPH"] ** 2
/ mesh.elemental_fields["VPV"] ** 2
- 1.0
),
)
for k, v in vti_model.items():
mesh.elemental_fields[k] = v
del mesh.elemental_fields["VPV"]
del mesh.elemental_fields["VPH"]
del mesh.elemental_fields["RHO"]
else:
vti_model = convert_thomsen_params_to_vti_tensor(
dim=2,
rho=mesh.elemental_fields["RHO"],
vp=mesh.elemental_fields["VP"],
delta=np.zeros_like(mesh.elemental_fields["VP"]),
epsilon=np.zeros_like(mesh.elemental_fields["VP"]),
)
for k, v in vti_model.items():
mesh.elemental_fields[k] = v
del mesh.elemental_fields["VP"]
del mesh.elemental_fields["RHO"]
return mesh
mesh = p.simulations.get_mesh("isotropic")
mesh = interpolate_vti_model_onto_mesh(mesh)
p.add_to_project(
sn.UnstructuredMeshSimulationConfiguration(
unstructured_mesh=mesh,
name="thomsen-isotropic",
event_configuration=p.entities.get(
"simulation_configuration", "anisotropic"
).event_configuration,
)
)
mesh = p.simulations.get_mesh("anisotropic")
mesh = interpolate_vti_model_onto_mesh(mesh)
p.add_to_project(
sn.UnstructuredMeshSimulationConfiguration(
unstructured_mesh=mesh,
name="thomsen-anisotropic",
event_configuration=p.entities.get(
"simulation_configuration", "anisotropic"
).event_configuration,
)
)
[2024-07-02 14:09:01,393] INFO: Creating mesh. Hang on.
src = sn.simple_config.source.cartesian.ScalarPoint2D(x=1500, y=0, f=1.0)
recs = sn.simple_config.receiver.cartesian.collections.ArrayPoint2D(
x=np.linspace(100, 2900, 141), y=np.zeros(141), fields=["phi"]
)
p += sn.Event(event_name="event", sources=src, receivers=recs)
p.viz.nb.domain()
for name in [
"isotropic",
"anisotropic",
"fake-anisotropic",
"thomsen-anisotropic",
"thomsen-isotropic",
]:
p.simulations.launch(
simulation_configuration=name,
events=p.events.list(),
site_name=SALVUS_FLOW_SITE_NAME,
ranks_per_job=1,
)
p.simulations.query(block=True)
[2024-07-02 14:09:02,065] INFO: Submitting job ... Uploading 1 files... 🚀 Submitted job_2407021409299213_bdca8e0957@local
[2024-07-02 14:09:06,690] INFO: Submitting job ... Uploading 1 files... 🚀 Submitted job_2407021409710796_238bf31e0a@local
[2024-07-02 14:09:12,201] INFO: Creating mesh. Hang on. [2024-07-02 14:09:12,432] INFO: Submitting job ... Uploading 1 files... 🚀 Submitted job_2407021409450001_4de12a1245@local
[2024-07-02 14:09:16,278] INFO: Submitting job ... Uploading 1 files... 🚀 Submitted job_2407021409287216_f19ee43223@local
[2024-07-02 14:09:20,045] INFO: Submitting job ... Uploading 1 files... 🚀 Submitted job_2407021409055487_85a048ef77@local
p.viz.nb.waveforms(
data=["isotropic", "fake-anisotropic", "thomsen-isotropic"],
receiver_field="phi",
)
p.viz.nb.waveforms(
data=["anisotropic", "thomsen-anisotropic"],
receiver_field="phi",
)
p.viz.nb.waveforms(
data=["isotropic", "anisotropic"],
receiver_field="phi",
)
p.waveforms.get(data_name="isotropic", events=p.events.list())[0].plot(
component="A",
receiver_field="phi",
plot_types=["shotgather"],
)
p.waveforms.get(data_name="anisotropic", events=p.events.list())[0].plot(
component="A",
receiver_field="phi",
plot_types=["shotgather"],
)