UnityLewisTransport Class Reference#
Class UnityLewisTransport implements the unity Lewis number approximation for the mixture-averaged species diffusion coefficients. More...
#include <UnityLewisTransport.h>
Detailed Description
Class UnityLewisTransport implements the unity Lewis number approximation for the mixture-averaged species diffusion coefficients.
Mixture-averaged transport properties for viscosity and thermal conductivity are inherited from the MixTransport class.
Definition at line 25 of file UnityLewisTransport.h.
Public Member Functions | |
string | transportModel () const override |
Identifies the model represented by this Transport object. | |
void | getMixDiffCoeffs (double *const d) override |
Returns the unity Lewis number approximation based diffusion coefficients [m^2/s]. | |
void | getMixDiffCoeffsMole (double *const d) override |
Not implemented for unity Lewis number approximation. | |
void | getMixDiffCoeffsMass (double *const d) override |
Returns the unity Lewis number approximation based diffusion coefficients [m^2/s]. | |
Public Member Functions inherited from MixTransport | |
MixTransport ()=default | |
Default constructor. | |
string | transportModel () const override |
Identifies the model represented by this Transport object. | |
void | getThermalDiffCoeffs (double *const dt) override |
Return the thermal diffusion coefficients. | |
double | thermalConductivity () override |
Returns the mixture thermal conductivity (W/m /K) | |
void | getMobilities (double *const mobil) override |
Get the Electrical mobilities (m^2/V/s). | |
void | update_T () override |
Update the internal parameters whenever the temperature has changed. | |
void | update_C () override |
Update the internal parameters whenever the concentrations have changed. | |
void | getSpeciesFluxes (size_t ndim, const double *const grad_T, size_t ldx, const double *const grad_X, size_t ldf, double *const fluxes) override |
Get the species diffusive mass fluxes wrt to the mass averaged velocity, given the gradients in mole fraction and temperature. | |
void | init (ThermoPhase *thermo, int mode=0, int log_level=0) override |
Initialize a transport manager. | |
Public Member Functions inherited from GasTransport | |
double | viscosity () override |
Viscosity of the mixture (kg /m /s) | |
void | getSpeciesViscosities (double *const visc) override |
Get the pure-species viscosities. | |
void | getBinaryDiffCoeffs (const size_t ld, double *const d) override |
Returns the matrix of binary diffusion coefficients. | |
void | getMixDiffCoeffs (double *const d) override |
Returns the Mixture-averaged diffusion coefficients [m^2/s]. | |
void | getMixDiffCoeffsMole (double *const d) override |
Returns the mixture-averaged diffusion coefficients [m^2/s]. | |
void | getMixDiffCoeffsMass (double *const d) override |
Returns the mixture-averaged diffusion coefficients [m^2/s]. | |
void | getViscosityPolynomial (size_t i, double *coeffs) const override |
Return the polynomial fits to the viscosity of species i. | |
void | getConductivityPolynomial (size_t i, double *coeffs) const override |
Return the temperature fits of the heat conductivity of species i. | |
void | getBinDiffusivityPolynomial (size_t i, size_t j, double *coeffs) const override |
Return the polynomial fits to the binary diffusivity of species pair (i, j) | |
void | getCollisionIntegralPolynomial (size_t i, size_t j, double *astar_coeffs, double *bstar_coeffs, double *cstar_coeffs) const override |
Return the polynomial fits to the collision integral of species pair (i, j) | |
void | setViscosityPolynomial (size_t i, double *coeffs) override |
Modify the polynomial fits to the viscosity of species i. | |
void | setConductivityPolynomial (size_t i, double *coeffs) override |
Modify the temperature fits of the heat conductivity of species i. | |
void | setBinDiffusivityPolynomial (size_t i, size_t j, double *coeffs) override |
Modify the polynomial fits to the binary diffusivity of species pair (i, j) | |
void | setCollisionIntegralPolynomial (size_t i, size_t j, double *astar_coeffs, double *bstar_coeffs, double *cstar_coeffs, bool actualT) override |
Modify the polynomial fits to the collision integral of species pair (i, j) | |
void | init (ThermoPhase *thermo, int mode=0, int log_level=0) override |
Initialize a transport manager. | |
bool | CKMode () const override |
Boolean indicating the form of the transport properties polynomial fits. | |
Public Member Functions inherited from Transport | |
Transport ()=default | |
Constructor. | |
Transport (const Transport &)=delete | |
Transport & | operator= (const Transport &)=delete |
virtual string | transportModel () const |
Identifies the model represented by this Transport object. | |
ThermoPhase & | thermo () |
Phase object. | |
void | checkSpeciesIndex (size_t k) const |
Check that the specified species index is in range. | |
void | checkSpeciesArraySize (size_t kk) const |
Check that an array size is at least nSpecies(). | |
virtual void | getSpeciesFluxes (size_t ndim, const double *const grad_T, size_t ldx, const double *const grad_X, size_t ldf, double *const fluxes) |
Get the species diffusive mass fluxes wrt to the specified solution averaged velocity, given the gradients in mole fraction and temperature. | |
virtual void | getMolarFluxes (const double *const state1, const double *const state2, const double delta, double *const cfluxes) |
Get the molar fluxes [kmol/m^2/s], given the thermodynamic state at two nearby points. | |
virtual void | getMassFluxes (const double *state1, const double *state2, double delta, double *mfluxes) |
Get the mass fluxes [kg/m^2/s], given the thermodynamic state at two nearby points. | |
virtual void | getThermalDiffCoeffs (double *const dt) |
Return a vector of Thermal diffusion coefficients [kg/m/sec]. | |
virtual void | getBinaryDiffCoeffs (const size_t ld, double *const d) |
Returns the matrix of binary diffusion coefficients [m^2/s]. | |
virtual void | getMultiDiffCoeffs (const size_t ld, double *const d) |
Return the Multicomponent diffusion coefficients. Units: [m^2/s]. | |
virtual void | getMixDiffCoeffs (double *const d) |
Returns a vector of mixture averaged diffusion coefficients. | |
virtual void | getMixDiffCoeffsMole (double *const d) |
Returns a vector of mixture averaged diffusion coefficients. | |
virtual void | getMixDiffCoeffsMass (double *const d) |
Returns a vector of mixture averaged diffusion coefficients. | |
virtual void | getViscosityPolynomial (size_t i, double *coeffs) const |
Return the polynomial fits to the viscosity of species i. | |
virtual void | getConductivityPolynomial (size_t i, double *coeffs) const |
Return the temperature fits of the heat conductivity of species i. | |
virtual void | getBinDiffusivityPolynomial (size_t i, size_t j, double *coeffs) const |
Return the polynomial fits to the binary diffusivity of species pair (i, j) | |
virtual void | getCollisionIntegralPolynomial (size_t i, size_t j, double *astar_coeffs, double *bstar_coeffs, double *cstar_coeffs) const |
Return the polynomial fits to the collision integral of species pair (i, j) | |
virtual void | setViscosityPolynomial (size_t i, double *coeffs) |
Modify the polynomial fits to the viscosity of species i. | |
virtual void | setConductivityPolynomial (size_t i, double *coeffs) |
Modify the temperature fits of the heat conductivity of species i. | |
virtual void | setBinDiffusivityPolynomial (size_t i, size_t j, double *coeffs) |
Modify the polynomial fits to the binary diffusivity of species pair (i, j) | |
virtual void | setCollisionIntegralPolynomial (size_t i, size_t j, double *astar_coeffs, double *bstar_coeffs, double *cstar_coeffs, bool flag) |
Modify the polynomial fits to the collision integral of species pair (i, j) | |
AnyMap | parameters () const |
Return the parameters for a phase definition which are needed to reconstruct an identical object using the newTransport function. | |
virtual double | bulkViscosity () |
The bulk viscosity in Pa-s. | |
virtual double | electricalConductivity () |
The electrical conductivity (Siemens/m). | |
Additional Inherited Members | |
Protected Member Functions inherited from MixTransport | |
void | updateCond_T () |
Update the temperature dependent parts of the species thermal conductivities. | |
Protected Member Functions inherited from GasTransport | |
virtual void | update_T () |
virtual void | update_C ()=0 |
virtual void | updateViscosity_T () |
Update the temperature-dependent viscosity terms. | |
virtual void | updateSpeciesViscosities () |
Update the pure-species viscosities. | |
virtual void | updateDiff_T () |
Update the binary diffusion coefficients. | |
virtual void | setupCollisionParameters () |
Setup parameters for a new kinetic-theory-based transport manager for low-density gases. | |
void | setupCollisionIntegral () |
Setup range for polynomial fits to collision integrals of Monchick & Mason [27]. | |
void | getTransportData () |
Read the transport database. | |
void | makePolarCorrections (size_t i, size_t j, double &f_eps, double &f_sigma) |
Corrections for polar-nonpolar binary diffusion coefficients. | |
void | fitCollisionIntegrals (MMCollisionInt &integrals) |
Generate polynomial fits to collision integrals. | |
virtual void | fitProperties (MMCollisionInt &integrals) |
Generate polynomial fits to the viscosity \( \eta \) and conductivity \( \lambda \). | |
virtual void | fitDiffCoeffs (MMCollisionInt &integrals) |
Generate polynomial fits to the binary diffusion coefficients. | |
void | getBinDiffCorrection (double t, MMCollisionInt &integrals, size_t k, size_t j, double xk, double xj, double &fkj, double &fjk) |
Second-order correction to the binary diffusion coefficients. | |
Protected Attributes inherited from MixTransport | |
vector< double > | m_cond |
vector of species thermal conductivities (W/m /K) | |
double | m_lambda = 0.0 |
Internal storage for the calculated mixture thermal conductivity. | |
bool | m_spcond_ok = false |
Update boolean for the species thermal conductivities. | |
bool | m_condmix_ok = false |
Update boolean for the mixture rule for the mixture thermal conductivity. | |
Protected Attributes inherited from GasTransport | |
vector< double > | m_molefracs |
Vector of species mole fractions. | |
double | m_viscmix = 0.0 |
Internal storage for the viscosity of the mixture (kg /m /s) | |
bool | m_visc_ok = false |
Update boolean for mixture rule for the mixture viscosity. | |
bool | m_viscwt_ok = false |
Update boolean for the weighting factors for the mixture viscosity. | |
bool | m_spvisc_ok = false |
Update boolean for the species viscosities. | |
bool | m_bindiff_ok = false |
Update boolean for the binary diffusivities at unit pressure. | |
int | m_mode = 0 |
Type of the polynomial fits to temperature. | |
DenseMatrix | m_phi |
m_phi is a Viscosity Weighting Function. size = m_nsp * n_nsp | |
vector< double > | m_spwork |
work space length = m_kk | |
vector< double > | m_visc |
vector of species viscosities (kg /m /s). | |
vector< vector< double > > | m_visccoeffs |
Polynomial fits to the viscosity of each species. | |
vector< double > | m_mw |
Local copy of the species molecular weights. | |
DenseMatrix | m_wratjk |
Holds square roots of molecular weight ratios. | |
DenseMatrix | m_wratkj1 |
Holds square roots of molecular weight ratios. | |
vector< double > | m_sqvisc |
vector of square root of species viscosities sqrt(kg /m /s). | |
vector< double > | m_polytempvec |
Powers of the ln temperature, up to fourth order. | |
double | m_temp = -1.0 |
Current value of the temperature at which the properties in this object are calculated (Kelvin). | |
double | m_kbt = 0.0 |
Current value of Boltzmann constant times the temperature (Joules) | |
double | m_sqrt_t = 0.0 |
current value of temperature to 1/2 power | |
double | m_logt = 0.0 |
Current value of the log of the temperature. | |
double | m_t14 = 0.0 |
Current value of temperature to 1/4 power. | |
vector< vector< double > > | m_diffcoeffs |
Polynomial fits to the binary diffusivity of each species. | |
DenseMatrix | m_bdiff |
Matrix of binary diffusion coefficients at the reference pressure and the current temperature Size is nsp x nsp. | |
vector< vector< double > > | m_condcoeffs |
temperature fits of the heat conduction | |
vector< vector< int > > | m_poly |
Indices for the (i,j) interaction in collision integral fits. | |
vector< vector< double > > | m_omega22_poly |
Fit for omega22 collision integral. | |
vector< vector< int > > | m_star_poly_uses_actualT |
Flag to indicate for which (i,j) interaction pairs the actual temperature is used instead of the reduced temperature. | |
vector< vector< double > > | m_astar_poly |
Fit for astar collision integral. | |
vector< vector< double > > | m_bstar_poly |
Fit for bstar collision integral. | |
vector< vector< double > > | m_cstar_poly |
Fit for cstar collision integral. | |
vector< double > | m_zrot |
Rotational relaxation number for each species. | |
vector< double > | m_crot |
Dimensionless rotational heat capacity of each species. | |
vector< bool > | m_polar |
Vector of booleans indicating whether a species is a polar molecule. | |
vector< double > | m_alpha |
Polarizability of each species in the phase. | |
vector< double > | m_eps |
Lennard-Jones well-depth of the species in the current phase. | |
vector< double > | m_sigma |
Lennard-Jones diameter of the species in the current phase. | |
DenseMatrix | m_reducedMass |
This is the reduced mass of the interaction between species i and j. | |
DenseMatrix | m_diam |
hard-sphere diameter for (i,j) collision | |
DenseMatrix | m_epsilon |
The effective well depth for (i,j) collisions. | |
DenseMatrix | m_dipole |
The effective dipole moment for (i,j) collisions. | |
DenseMatrix | m_delta |
Reduced dipole moment of the interaction between two species. | |
vector< double > | m_w_ac |
Pitzer acentric factor. | |
vector< double > | m_disp |
Dispersion coefficient. | |
vector< double > | m_quad_polar |
Quadrupole polarizability. | |
int | m_log_level = 0 |
Level of verbose printing during initialization. | |
Protected Attributes inherited from Transport | |
ThermoPhase * | m_thermo |
pointer to the object representing the phase | |
size_t | m_nsp = 0 |
Number of species. | |
Member Function Documentation
◆ transportModel()
|
inlineoverridevirtual |
Identifies the model represented by this Transport object.
Each derived class should override this method to return a meaningful identifier.
- Since
- New in Cantera 3.0. The name returned by this method corresponds to the canonical name used in the YAML input format.
Reimplemented from MixTransport.
Definition at line 30 of file UnityLewisTransport.h.
◆ getMixDiffCoeffs()
|
inlineoverridevirtual |
Returns the unity Lewis number approximation based diffusion coefficients [m^2/s].
Returns the unity Lewis number approximation based diffusion coefficients for a gas, appropriate for calculating the mass averaged diffusive flux with respect to the mass averaged velocity using gradients of the mole fraction.
\[ D^\prime_{km} = \frac{\lambda}{\rho c_p} \]
In order to obtain the expected behavior from a unity Lewis number model, this formulation requires that the correction velocity be computed as
\[ V_c = \sum \frac{W_k}{\overline{W}} D^\prime_{km} \nabla X_k \]
- Parameters
-
[out] d Vector of diffusion coefficients for each species (m^2/s). length m_nsp.
Reimplemented from GasTransport.
Definition at line 56 of file UnityLewisTransport.h.
◆ getMixDiffCoeffsMole()
|
inlineoverridevirtual |
Not implemented for unity Lewis number approximation.
Reimplemented from GasTransport.
Definition at line 64 of file UnityLewisTransport.h.
◆ getMixDiffCoeffsMass()
|
inlineoverridevirtual |
Returns the unity Lewis number approximation based diffusion coefficients [m^2/s].
These are the coefficients for calculating the diffusive mass fluxes from the species mass fraction gradients, computed as
\[ D_{km} = \frac{\lambda}{\rho c_p} \]
- Parameters
-
[out] d Vector of diffusion coefficients for each species (m^2/s). length m_nsp.
Reimplemented from GasTransport.
Definition at line 81 of file UnityLewisTransport.h.
The documentation for this class was generated from the following file:
Generated by 1.9.7