134 lines
4.9 KiB
Fortran
134 lines
4.9 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Philip Eisenlohr, Michigan State University
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!> @brief material subroutine for variable heat source
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!--------------------------------------------------------------------------------------------------
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submodule(phase:thermal) externalheat
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integer, dimension(:), allocatable :: &
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source_thermal_externalheat_offset !< which source is my current thermal dissipation mechanism?
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type :: tParameters !< container type for internal constitutive parameters
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real(pReal), dimension(:), allocatable :: &
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t_n, &
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f_T
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integer :: &
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nIntervals
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end type tParameters
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type(tParameters), dimension(:), allocatable :: param !< containers of constitutive parameters (len Ninstances)
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contains
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!--------------------------------------------------------------------------------------------------
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!> @brief module initialization
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!> @details reads in material parameters, allocates arrays, and does sanity checks
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!--------------------------------------------------------------------------------------------------
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module function externalheat_init(source_length) result(mySources)
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integer, intent(in) :: source_length
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logical, dimension(:,:), allocatable :: mySources
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class(tNode), pointer :: &
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phases, &
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phase, &
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sources, thermal, &
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src
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integer :: so,Nmembers,ph
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mySources = thermal_active('externalheat',source_length)
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if(count(mySources) == 0) return
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print'(/,1x,a)', '<<<+- phase:thermal:externalheat init -+>>>'
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print'(/,a,i2)', ' # phases: ',count(mySources); flush(IO_STDOUT)
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phases => config_material%get('phase')
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allocate(param(phases%length))
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allocate(source_thermal_externalheat_offset (phases%length), source=0)
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do ph = 1, phases%length
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phase => phases%get(ph)
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if (count(mySources(:,ph)) == 0) cycle
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thermal => phase%get('thermal')
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sources => thermal%get('source')
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do so = 1, sources%length
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if (mySources(so,ph)) then
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source_thermal_externalheat_offset(ph) = so
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associate(prm => param(ph))
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src => sources%get(so)
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prm%t_n = src%get_as1dFloat('t_n')
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prm%nIntervals = size(prm%t_n) - 1
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prm%f_T = src%get_as1dFloat('f_T',requiredSize = size(prm%t_n))
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Nmembers = count(material_phaseID == ph)
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call phase_allocateState(thermalState(ph)%p(so),Nmembers,1,1,0)
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end associate
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end if
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end do
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end do
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end function externalheat_init
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!--------------------------------------------------------------------------------------------------
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!> @brief rate of change of state
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!> @details state only contains current time to linearly interpolate given heat powers
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!--------------------------------------------------------------------------------------------------
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module subroutine externalheat_dotState(ph, en)
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integer, intent(in) :: &
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ph, &
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en
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integer :: &
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so
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so = source_thermal_externalheat_offset(ph)
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thermalState(ph)%p(so)%dotState(1,en) = 1.0_pReal ! state is current time
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end subroutine externalheat_dotState
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!--------------------------------------------------------------------------------------------------
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!> @brief returns local heat generation rate
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!--------------------------------------------------------------------------------------------------
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module function externalheat_f_T(ph,en) result(f_T)
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integer, intent(in) :: &
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ph, &
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en
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real(pReal) :: &
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f_T
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integer :: &
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so, interval
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real(pReal) :: &
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frac_time
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so = source_thermal_externalheat_offset(ph)
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associate(prm => param(ph))
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do interval = 1, prm%nIntervals ! scan through all rate segments
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frac_time = (thermalState(ph)%p(so)%state(1,en) - prm%t_n(interval)) &
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/ (prm%t_n(interval+1) - prm%t_n(interval)) ! fractional time within segment
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if ( (frac_time < 0.0_pReal .and. interval == 1) &
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.or. (frac_time >= 1.0_pReal .and. interval == prm%nIntervals) &
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.or. (frac_time >= 0.0_pReal .and. frac_time < 1.0_pReal) ) &
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f_T = prm%f_T(interval ) * (1.0_pReal - frac_time) + &
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prm%f_T(interval+1) * frac_time ! interpolate heat rate between segment boundaries...
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! ...or extrapolate if outside of bounds
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end do
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end associate
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end function externalheat_f_T
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end submodule externalheat
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