m_fftw.fpp.f90 File Reference

Contains module m_fftw. More...

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Modules
module	m_fftw
	Forward and inverse FFT wrappers (FFTW/cuFFT/hipFFT) for azimuthal Fourier filtering in cylindrical geometries.

Functions/Subroutines
impure subroutine, public	m_fftw::s_initialize_fftw_module
	The purpose of this subroutine is to create the fftw plan that will be used in the forward and backward DFTs when applying the Fourier filter in the azimuthal direction.
impure subroutine, public	m_fftw::s_apply_fourier_filter (q_cons_vf)
	The purpose of this subroutine is to apply a Fourier low- pass filter to the flow variables in the azimuthal direction to remove the high-frequency content. This alleviates the restrictive CFL condition arising from cells near the axis.
impure subroutine, public	m_fftw::s_finalize_fftw_module
	The purpose of this subroutine is to destroy the fftw plan that will be used in the forward and backward DFTs when applying the Fourier filter in the azimuthal direction.

Variables
type(c_ptr)	m_fftw::fwd_plan
type(c_ptr)	m_fftw::bwd_plan
type(c_ptr)	m_fftw::fftw_real_data
type(c_ptr)	m_fftw::fftw_cmplx_data
type(c_ptr)	m_fftw::fftw_fltr_cmplx_data
integer	m_fftw::real_size
integer	m_fftw::cmplx_size
integer	m_fftw::x_size
integer	m_fftw::batch_size
integer	m_fftw::nfq
real(c_double), dimension(:), pointer	m_fftw::data_real
	Real data.
complex(c_double_complex), dimension(:), pointer	m_fftw::data_cmplx
	Complex data in Fourier space.
complex(c_double_complex), dimension(:), pointer	m_fftw::data_fltr_cmplx
	Filtered complex data in Fourier space.
real(dp), dimension(:), allocatable, target	m_fftw::data_real_gpu
complex(dp), dimension(:), allocatable, target	m_fftw::data_cmplx_gpu
complex(dp), dimension(:), allocatable, target	m_fftw::data_fltr_cmplx_gpu
type(c_ptr)	m_fftw::fwd_plan_gpu
type(c_ptr)	m_fftw::bwd_plan_gpu
integer, dimension(:), allocatable	m_fftw::gpu_fft_size
integer, dimension(:), allocatable	m_fftw::iembed
integer, dimension(:), allocatable	m_fftw::oembed
integer	m_fftw::istride
integer	m_fftw::ostride
integer	m_fftw::idist
integer	m_fftw::odist
integer	m_fftw::rank

Detailed Description

Contains module m_fftw.

Definition in file m_fftw.fpp.f90.