EvaporativeCooling< number > Class Template Reference๏
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Developer Documentation
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MeltPoolDG::Evaporation::EvaporativeCooling< number > Class Template Reference
#include <evaporative_cooling.hpp>
Public Member Functions | |
| EvaporativeCooling (const EvaporationData< number > &evapor_data, const MaterialData< number > &material_data, const bool setup_internal_mass_flux_operator=false) | |
| template<typename ValueType > | |
| ValueType | compute_evaporative_cooling (const ValueType &mass_flux, const ValueType &temperature) const |
| number | compute_evaporative_cooling (const number temperature) const |
| dealii::VectorizedArray< number > | compute_evaporative_cooling (const dealii::VectorizedArray< number > &temperature) const |
| template<typename ValueType > | |
| ValueType | compute_evaporative_cooling_derivative_constant_mass_flux (const ValueType &mass_flux) const |
| number | compute_evaporative_cooling_derivative_with_temperature_dependent_mass_flux (const number temperature) const |
| dealii::VectorizedArray< number > | compute_evaporative_cooling_derivative_with_temperature_dependent_mass_flux (const dealii::VectorizedArray< number > &temperature) const |
Private Member Functions | |
| template<typename ValueType > | |
| ValueType | compute_phenomenological_specific_enthalpy (const ValueType &temperature) const |
Private Attributes | |
| const bool | do_phenomenological_recoil_pressure |
| const number | latent_heat_of_evaporation |
| const number | specific_heat_capacity |
| const number | specific_enthalpy_reference_temperature |
| const number | boiling_temperature |
| number | activation_temperature |
| bool | ramp_enabled |
| number | activation_ramp_derivative = 0 |
| std::unique_ptr< EvaporationModelBase< number > > | mass_flux_operator |
Detailed Description
template<typename number>
class MeltPoolDG::Evaporation::EvaporativeCooling< number >
class MeltPoolDG::Evaporation::EvaporativeCooling< number >
Compute the heat sink due to evaporative cooling q_s = - m ยท (h_v + h(T))
with the latent heat of evaporation h_v, the specific enthalpy
T
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h(T) = | c_p . (1) | / T_ref
where T_ref denotes an artificial reference temperature for the specific enthalpy.
h_v + h(T) is the total enthalpy leaving the system with the evaporative mass flux. h(T) can be typically found in tables. However, we assume for the computation of the specific enthalpy a linear temperature-dependence
h(T) = h_ref + c_p * T . (2)
see also Meier, Christoph, et al. "A novel smoothed particle hydrodynamics formulation for thermo-capillary phase change problems with focus on metal additive manufacturing melt pool modeling." CMAME 381 (2021).
By setting (1) equal to (2) and assuming the heat capacity to be temperature-independent, we obtain
h_ref = - c_p * T_ref
Inserting into (2) yields
h(T) = c_p * (T - T_ref).
- Note
- For the computation of h(T), it is assumed that the specific heat capacity c_p corresponds to the value for the liquid and solid phase.
- Instead of T_ref we could have also introduced directly h_ref as an input parameter.
Constructor & Destructor Documentation
◆ EvaporativeCooling()
template<typename number >
| MeltPoolDG::Evaporation::EvaporativeCooling< number >::EvaporativeCooling | ( | const EvaporationData< number > & | evapor_data, |
| const MaterialData< number > & | material_data, | ||
| const bool | setup_internal_mass_flux_operator = false |
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| ) |
Member Function Documentation
◆ compute_evaporative_cooling() [1/3]
template<typename number >
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inline |
◆ compute_evaporative_cooling() [2/3]
template<typename number >
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inline |
Compute the heat sink with the internal mass flux operator
◆ compute_evaporative_cooling() [3/3]
template<typename number >
template<typename ValueType >
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inline |
Compute the heat sink with given a constant
- Parameters
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mass_flux as:
◆ compute_evaporative_cooling_derivative_constant_mass_flux()
template<typename number >
template<typename ValueType >
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inline |
Compute the heat sink derivative given a constant
- Parameters
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mass_flux .
The derivative of specific enthalpy h(T) with respect to the temperature:
d h(T) -----— = c_p^sl dT
tangent of heat sink due to evaporation:
d q_s . ----— = - m * c_p^sl dT
◆ compute_evaporative_cooling_derivative_with_temperature_dependent_mass_flux() [1/2]
template<typename number >
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inline |
◆ compute_evaporative_cooling_derivative_with_temperature_dependent_mass_flux() [2/2]
template<typename number >
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inline |
Compute the heat sink derivative with the internal mass flux operator
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d q_s . d m ----— = - c_p^sl * m - (h_v + h(T)) * --— dT dT
◆ compute_phenomenological_specific_enthalpy()
template<typename number >
template<typename ValueType >
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inlineprivate |
Member Data Documentation
◆ activation_ramp_derivative
template<typename number >
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private |
◆ activation_temperature
template<typename number >
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private |
◆ boiling_temperature
template<typename number >
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private |
◆ do_phenomenological_recoil_pressure
template<typename number >
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private |
◆ latent_heat_of_evaporation
template<typename number >
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private |
◆ mass_flux_operator
template<typename number >
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private |
◆ ramp_enabled
template<typename number >
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private |
◆ specific_enthalpy_reference_temperature
template<typename number >
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private |
◆ specific_heat_capacity
template<typename number >
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private |
The documentation for this class was generated from the following files:
- include/meltpooldg/phase_change/evaporative_cooling.hpp
- include/meltpooldg/phase_change/evaporative_cooling.templates.hpp
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