!-----------------------------------------------------------------------------------------------------------------------------------
! This file is part of ReMKiT1D.
!
! ReMKiT1D is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as
! published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
!
! ReMKiT1D is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License along with ReMKiT1D. If not, see <https://www.gnu.org/licenses/>.
!
! Copyright 2023 United Kingdom Atomic Energy Authority (stefan.mijin@ukaea.uk)
!-----------------------------------------------------------------------------------------------------------------------------------
module maxwellian_derivation_class
!! author: Stefan Mijin
!!
!! Houses derivation that calculates a Maxwellian based on temperature and density and the velocity grid
use data_kinds ,only: rk ,ik
use runtime_constants ,only: debugging, assertions
use assertion_utility ,only: assert, assertIdentical, assertPure
use god_objects ,only: Object
use support_types ,only: RealArray
use physics_functions
use derivation_abstract_class ,only: Derivation
use v_space_class ,only: VSpace
implicit none
private
type ,public ,extends(Derivation) :: MaxwellianDerivation
!! Calculates Maxwellian distribution. Expects temperature and density indices (in that order), and assumes velocity is normalized
!! to electron thermal speed.
integer(ik) ,private :: numH !! Total number of harmonics
real(rk) ,allocatable ,dimension(:) ,private :: vGridCopy !! Local copy of velocity grid for easier calculations
contains
procedure ,public :: init => initMaxwellianDeriv
procedure ,public :: calculate => calculateMaxwellian
end type MaxwellianDerivation
!-----------------------------------------------------------------------------------------------------------------------------------
interface
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module subroutine initMaxwellianDeriv(this,vSpaceObj)
!! Initialize Maxwellian derivation
class(MaxwellianDerivation) ,intent(inout) :: this
type(VSpace) ,intent(in) :: vSpaceObj
end subroutine initMaxwellianDeriv
!-----------------------------------------------------------------------------------------------------------------------------------
module function calculateMaxwellian(this,inputArray,indices) result(output)
class(MaxwellianDerivation) ,intent(inout) :: this
type(RealArray) ,dimension(:) ,intent(in) :: inputArray
integer(ik) ,dimension(:) ,intent(in) :: indices
real(rk) ,allocatable ,dimension(:) :: output
end function calculateMaxwellian
!-----------------------------------------------------------------------------------------------------------------------------------
end interface
!-----------------------------------------------------------------------------------------------------------------------------------
end module maxwellian_derivation_class
!-----------------------------------------------------------------------------------------------------------------------------------
