fluidsim.operators.operators2d

Operators 2d (fluidsim.operators.operators2d)

Provides

class fluidsim.operators.operators2d.OperatorsPseudoSpectral2D(params)[source]

Bases: fluidfft.fft2d.operators.OperatorsPseudoSpectral2D, fluidsim.operators.base.OperatorBase

static _complete_params_with_default(params)[source]

This static method is used to complete the params container.

dealiasing_setofvar(self, sov: ‘complex128[][][]’)[source]

Dealiasing of a setofvar arrays.

project_fft_on_realX_seq(self, f_fft)[source]

Project the given field in spectral space such as its inverse fft is a real field.

coarse_seq_from_fft_loc(self, f_fft, shapeK_loc_coarse)[source]

Return a coarse field in K space.

compute_increments_dim1(self, var, irx)[source]

Compute the increments of var over the dim 1.

pdf_normalized(self, field, nb_bins=100)[source]

Compute the normalized pdf

pxffft_from_fft(self, f_fft)[source]

Return the gradient of f_fft in spectral space.

pyffft_from_fft(self, f_fft)[source]

Return the gradient of f_fft in spectral space.

laplacian_fft(self, a_fft, order=2, negative=False)[source]

Compute the n-th order Laplacian, \(\nabla^{n} \hat{a}\)

Parameters
a_fftndarray
order: int, {2, 4, 8}, optional

Order of the Laplacian operator

negative: bool, optional

Negative of the result.

invlaplacian_fft(self, a_fft, order=2, negative=False)[source]

Compute the n-th order inverse Laplacian, \(\nabla^{-n} \hat{a}\)

Parameters
a_fftndarray
order: int, {2, 4, 8}, optional

Order of the inverse Laplacian operator.

negative: bool, optional

Negative of the result.

put_coarse_array_in_array_fft(self, arr_coarse, arr, oper_coarse, shapeK_loc_coarse)[source]

Put the values contained in a coarse array in an array.

Both arrays are in Fourier space.

Functions

compute_increments_dim1(var, irx)

Compute the increments of var over the dim 1.

invlaplacian_fft(a_fft, Kn_not0, rank)

Compute the n-th order inverse Laplacian.

laplacian_fft(a_fft, Kn)

Compute the n-th order Laplacian.

Classes

OperatorsPseudoSpectral2D(params)