LinearTendency

class fridom.shallowwater.modules.linear_tendency.LinearTendency

Bases: Module

Computes the linear tendency of the shallow water model.

The linear tendency is given by:

\[\partial_t \boldsymbol{u} = f \underset{\neg}{\boldsymbol{v}} - \nabla p ~, \quad \partial_t p = -c^2 \nabla \cdot \boldsymbol{u}\]

__init__()

Methods

__init__()
disable()	Enabling the module means that it will be executed at each time step.
enable()	Enabling the module means that it will be executed at each time step.
is_enabled()	Return whether the module is enabled or not.
linear_tendency(z, dz)	Compute the linear tendency term.
reset()	Stop and start the module.
setup(mset)	Start the module
start()	Start the module
stop()	Stop the module
update(mz)	Update the module

Attributes

diff_module	The differentiation module to be used by this module.
grid	The grid of the model settings
info	Return a dictionary with information about the time stepper.
interp_module	The interpolation module to be used by this module.
mset	The model settings
name
required_halo

name = 'Linear Tendency'

setup(mset: ModelSettings) → None

Start the module

Description

This method is called by the ModelSettings.setup() and sets the ModelSettings as well as the differentiation and interpolation modules.

update(mz: ModelState) → ModelState

Update the module

Description

This method is called by the model at each time step. Child classes should overwrite this method to update the module. Make sure to decorate the method with the @module_method decorator.

Parameters

mzfr.ModelState

The model state at the current time step.

Returns

fr.ModelState

The updated model state.

linear_tendency(z: State, dz: State) → State

Compute the linear tendency term.