139 lines
5.7 KiB
Fortran
139 lines
5.7 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(constitutive:constitutive_thermal) source_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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source_thermal_externalheat_instance !< instance of thermal dissipation source 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 Ninstance)
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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 source_thermal_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, &
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src
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integer :: Ninstance,sourceOffset,NipcMyPhase,p
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print'(/,a)', ' <<<+- source_thermal_externalHeat init -+>>>'
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mySources = source_active('thermal_externalheat',source_length)
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Ninstance = count(mySources)
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print'(a,i2)', ' # instances: ',Ninstance; flush(IO_STDOUT)
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if(Ninstance == 0) return
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phases => config_material%get('phase')
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allocate(param(Ninstance))
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allocate(source_thermal_externalheat_offset (phases%length), source=0)
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allocate(source_thermal_externalheat_instance(phases%length), source=0)
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do p = 1, phases%length
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phase => phases%get(p)
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if(any(mySources(:,p))) source_thermal_externalheat_instance(p) = count(mySources(:,1:p))
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if(count(mySources(:,p)) == 0) cycle
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sources => phase%get('source')
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do sourceOffset = 1, sources%length
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if(mySources(sourceOffset,p)) then
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source_thermal_externalheat_offset(p) = sourceOffset
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associate(prm => param(source_thermal_externalheat_instance(p)))
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src => sources%get(sourceOffset)
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prm%t_n = src%get_asFloats('t_n')
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prm%nIntervals = size(prm%t_n) - 1
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prm%f_T = src%get_asFloats('f_T',requiredSize = size(prm%t_n))
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NipcMyPhase = count(material_phaseAt==p) * discretization_nIP
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call constitutive_allocateState(sourceState(p)%p(sourceOffset),NipcMyPhase,1,1,0)
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end associate
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endif
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enddo
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enddo
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end function source_thermal_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 source_thermal_externalheat_dotState(phase, of)
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integer, intent(in) :: &
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phase, &
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of
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integer :: &
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sourceOffset
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sourceOffset = source_thermal_externalheat_offset(phase)
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sourceState(phase)%p(sourceOffset)%dotState(1,of) = 1.0_pReal ! state is current time
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end subroutine source_thermal_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 subroutine source_thermal_externalheat_getRateAndItsTangent(TDot, dTDot_dT, phase, of)
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integer, intent(in) :: &
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phase, &
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of
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real(pReal), intent(out) :: &
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TDot, &
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dTDot_dT
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integer :: &
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sourceOffset, interval
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real(pReal) :: &
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frac_time
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sourceOffset = source_thermal_externalheat_offset(phase)
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associate(prm => param(source_thermal_externalheat_instance(phase)))
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do interval = 1, prm%nIntervals ! scan through all rate segments
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frac_time = (sourceState(phase)%p(sourceOffset)%state(1,of) - 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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TDot = 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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enddo
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dTDot_dT = 0.0
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end associate
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end subroutine source_thermal_externalheat_getRateAndItsTangent
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end submodule source_thermal_externalheat
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