tidy3d.HeatSimulation

tidy3d.HeatSimulation#

class HeatSimulation[source]#

Bases: AbstractSimulation

Contains all information about heat simulation.

Parameters:

  • attrs (dict = {}) – Dictionary storing arbitrary metadata for a Tidy3D object. This dictionary can be freely used by the user for storing data without affecting the operation of Tidy3D as it is not used internally. Note that, unlike regular Tidy3D fields, attrs are mutable. For example, the following is allowed for setting an attr obj.attrs['foo'] = bar. Also note that Tidy3D` will raise a TypeError if attrs contain objects that can not be serialized. One can check if attrs are serializable by calling obj.json().

  • center (Union[tuple[Union[float, autograd.tracer.Box], Union[float, autograd.tracer.Box], Union[float, autograd.tracer.Box]], Box] = (0.0, 0.0, 0.0)) – [units = um]. Center of object in x, y, and z.

  • size (Union[tuple[Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box], Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box], Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box]], Box]) – [units = um]. Size in x, y, and z directions.

  • medium (Union[Medium, AnisotropicMedium, PECMedium, PoleResidue, Sellmeier, Lorentz, Debye, Drude, FullyAnisotropicMedium, CustomMedium, CustomPoleResidue, CustomSellmeier, CustomLorentz, CustomDebye, CustomDrude, CustomAnisotropicMedium, PerturbationMedium, PerturbationPoleResidue] = Medium(attrs={}, name=None, frequency_range=None, allow_gain=False, nonlinear_spec=None, modulation_spec=None, heat_spec=None, type='Medium', permittivity=1.0, conductivity=0.0)) – Background medium of simulation, defaults to vacuum if not specified.

  • structures (Tuple[Structure, ...] = ()) – Tuple of structures present in simulation. Note: Structures defined later in this list override the simulation material properties in regions of spatial overlap.

  • symmetry (Tuple[Literal[0, 1], Literal[0, 1], Literal[0, 1]] = (0, 0, 0)) – Tuple of integers defining reflection symmetry across a plane bisecting the simulation domain normal to the x-, y-, and z-axis at the simulation center of each axis, respectively. Each element can be 0 (symmetry off) or 1 (symmetry on).

  • sources (Tuple[UniformHeatSource, ...] = ()) – List of heat sources.

  • boundary_spec (Tuple[HeatBoundarySpec, ...] = ()) – List of boundary condition specifications.

  • monitors (Tuple[TemperatureMonitor, ...] = ()) – Monitors in the simulation.

  • grid_spec (Union[UniformUnstructuredGrid, DistanceUnstructuredGrid]) – Grid specification for heat simulation.

  • version (str = 2.7.7) – String specifying the front end version number.

Example

>>> from tidy3d import Medium, SolidSpec, FluidSpec, UniformUnstructuredGrid, TemperatureMonitor
>>> heat_sim = HeatSimulation(
...     size=(3.0, 3.0, 3.0),
...     structures=[
...         Structure(
...             geometry=Box(size=(1, 1, 1), center=(0, 0, 0)),
...             medium=Medium(
...                 permittivity=2.0, heat_spec=SolidSpec(
...                     conductivity=1,
...                     capacity=1,
...                 )
...             ),
...             name="box",
...         ),
...     ],
...     medium=Medium(permittivity=3.0, heat_spec=FluidSpec()),
...     grid_spec=UniformUnstructuredGrid(dl=0.1),
...     sources=[UniformHeatSource(rate=1, structures=["box"])],
...     boundary_spec=[
...         HeatBoundarySpec(
...             placement=StructureBoundary(structure="box"),
...             condition=TemperatureBC(temperature=500),
...         )
...     ],
...     monitors=[TemperatureMonitor(size=(1, 2, 3), name="sample")],
... )

Attributes

source_bounds

Compute range of heat sources present in the simulation.

version

DO NOT EDIT: Modified automatically with .bump2version.cfg

attrs

Methods

check_medium_heat_spec(values)

Error if no structures with SolidSpec.

check_unsupported_geometries(val)

Error if structures contain unsupported yet geometries.

check_zero_dim_domain(val, values)

Error if heat domain have zero dimensions.

from_scene(scene, **kwargs)

Create a simulation from a :class:.`Scene` instance.

names_exist_bcs(val, values)

Error if boundary conditions point to non-existing structures/media.

names_exist_grid_spec(val, values)

Warn if UniformUnstructuredGrid points at a non-existing structure.

names_exist_sources(val, values)

Error if a heat source point to non-existing structures.

not_all_neumann(val)

Error if all boundary conditions are Neumann bc.

plot_boundaries([x, y, z, ax])

Plot each of simulation's boundary conditions on a plane defined by one nonzero x,y,z coordinate.

plot_heat_conductivity([x, y, z, ax, alpha, ...])

Plot each of simulation's components on a plane defined by one nonzero x,y,z coordinate.

plot_sources([x, y, z, hlim, vlim, alpha, ax])

Plot each of simulation's sources on a plane defined by one nonzero x,y,z coordinate.

warn_if_minimal_mesh_size_override(val, values)

Warn if minimal mesh size limit overrides desired mesh size.

Inherited Common Usage

boundary_spec#
sources#
monitors#
grid_spec#
symmetry#
classmethod check_unsupported_geometries(val)[source]#

Error if structures contain unsupported yet geometries.

classmethod check_zero_dim_domain(val, values)[source]#

Error if heat domain have zero dimensions.

classmethod names_exist_bcs(val, values)[source]#

Error if boundary conditions point to non-existing structures/media.

classmethod not_all_neumann(val)[source]#

Error if all boundary conditions are Neumann bc.

classmethod names_exist_grid_spec(val, values)[source]#

Warn if UniformUnstructuredGrid points at a non-existing structure.

classmethod warn_if_minimal_mesh_size_override(val, values)[source]#

Warn if minimal mesh size limit overrides desired mesh size.

classmethod names_exist_sources(val, values)[source]#

Error if a heat source point to non-existing structures.

classmethod check_medium_heat_spec(values)[source]#

Error if no structures with SolidSpec.

plot_heat_conductivity(x=None, y=None, z=None, ax=None, alpha=None, source_alpha=None, monitor_alpha=None, colorbar='conductivity', hlim=None, vlim=None)[source]#

Plot each of simulation’s components on a plane defined by one nonzero x,y,z coordinate.

Parameters:

  • x (float = None) – position of plane in x direction, only one of x, y, z must be specified to define plane.

  • y (float = None) – position of plane in y direction, only one of x, y, z must be specified to define plane.

  • z (float = None) – position of plane in z direction, only one of x, y, z must be specified to define plane.

  • ax (matplotlib.axes._subplots.Axes = None) – Matplotlib axes to plot on, if not specified, one is created.

  • alpha (float = None) – Opacity of the structures being plotted. Defaults to the structure default alpha.

  • source_alpha (float = None) – Opacity of the sources. If None, uses Tidy3d default.

  • monitor_alpha (float = None) – Opacity of the monitors. If None, uses Tidy3d default.

  • colorbar (str = "conductivity") – Display colorbar for thermal conductivity (“conductivity”) or heat source rate (“source”).

  • hlim (Tuple[float, float] = None) – The x range if plotting on xy or xz planes, y range if plotting on yz plane.

  • vlim (Tuple[float, float] = None) – The z range if plotting on xz or yz planes, y plane if plotting on xy plane.

Returns:

The supplied or created matplotlib axes.

Return type:

matplotlib.axes._subplots.Axes

plot_boundaries(x=None, y=None, z=None, ax=None)[source]#

Plot each of simulation’s boundary conditions on a plane defined by one nonzero x,y,z coordinate.

Parameters:

  • x (float = None) – position of plane in x direction, only one of x, y, z must be specified to define plane.

  • y (float = None) – position of plane in y direction, only one of x, y, z must be specified to define plane.

  • z (float = None) – position of plane in z direction, only one of x, y, z must be specified to define plane.

  • ax (matplotlib.axes._subplots.Axes = None) – Matplotlib axes to plot on, if not specified, one is created.

Returns:

The supplied or created matplotlib axes.

Return type:

matplotlib.axes._subplots.Axes

plot_sources(x=None, y=None, z=None, hlim=None, vlim=None, alpha=None, ax=None)[source]#

Plot each of simulation’s sources on a plane defined by one nonzero x,y,z coordinate.

Parameters:

  • x (float = None) – position of plane in x direction, only one of x, y, z must be specified to define plane.

  • y (float = None) – position of plane in y direction, only one of x, y, z must be specified to define plane.

  • z (float = None) – position of plane in z direction, only one of x, y, z must be specified to define plane.

  • hlim (Tuple[float, float] = None) – The x range if plotting on xy or xz planes, y range if plotting on yz plane.

  • vlim (Tuple[float, float] = None) – The z range if plotting on xz or yz planes, y plane if plotting on xy plane.

  • alpha (float = None) – Opacity of the sources, If None uses Tidy3d default.

  • ax (matplotlib.axes._subplots.Axes = None) – Matplotlib axes to plot on, if not specified, one is created.

Returns:

The supplied or created matplotlib axes.

Return type:

matplotlib.axes._subplots.Axes

property source_bounds#

Compute range of heat sources present in the simulation.

classmethod from_scene(scene, **kwargs)[source]#

Create a simulation from a :class:.`Scene` instance. Must provide additional parameters to define a valid simulation (for example, size, grid_spec, etc).

Parameters:

  • scene (:class:.`Scene`) – Scene containing structures information.

  • **kwargs – Other arguments

Example

>>> from tidy3d import Scene, Medium, Box, Structure, UniformUnstructuredGrid
>>> box = Structure(
...     geometry=Box(center=(0, 0, 0), size=(1, 2, 3)),
...     medium=Medium(permittivity=5),
... )
>>> scene = Scene(
...     structures=[box],
...     medium=Medium(
...         permittivity=3,
...         heat_spec=SolidSpec(
...             conductivity=1, capacity=1,
...         ),
...     ),
... )
>>> sim = HeatSimulation.from_scene(
...     scene=scene,
...     center=(0, 0, 0),
...     size=(5, 6, 7),
...     grid_spec=UniformUnstructuredGrid(dl=0.4),
...     boundary_spec=[
...         HeatBoundarySpec(
...             placement=SimulationBoundary(),
...             condition=TemperatureBC(temperature=300)
...         )
...     ],
... )
__hash__()#

Hash method.