Cantera  2.1.2
SRI5 Class Reference

The 5-parameter SRI falloff function. More...

Inheritance diagram for SRI5:
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Collaboration diagram for SRI5:
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## Public Member Functions

SRI5 ()
Constructor. More...

virtual void init (const vector_fp &c)
Initialization of the object. More...

virtual void updateTemp (doublereal T, doublereal *work) const
Update the temperature parameters in the representation. More...

virtual doublereal F (doublereal pr, const doublereal *work) const
The falloff function. More...

virtual size_t workSize ()
The size of the work array required. More... Public Member Functions inherited from Falloff
Falloff ()
Default constructor is empty. More...

virtual ~Falloff ()
default destructor is empty More...

## Protected Attributes

doublereal m_a
parameter a in the 5-parameter SRI falloff function. This is unitless. More...

doublereal m_b
parameter b in the 5-parameter SRI falloff function. More...

doublereal m_c
parameter c in the 5-parameter SRI falloff function. More...

doublereal m_d
parameter d in the 5-parameter SRI falloff function. This is unitless. More...

doublereal m_e
parameter d in the 5-parameter SRI falloff function. This is unitless. More...

## Detailed Description

The 5-parameter SRI falloff function.

The falloff function defines the value of $$F$$ in the following rate expression

$k = k_{\infty} \left( \frac{P_r}{1 + P_r} \right) F$

where

$P_r = \frac{k_0 [M]}{k_{\infty}}$

$F = {\left( a \; exp(\frac{-b}{T}) + exp(\frac{-T}{c})\right)}^n \; d \; exp(\frac{-e}{T})$

where

$n = \frac{1.0}{1.0 + {\log_{10} P_r}^2}$

$$c$$ s required to greater than or equal to zero. If it is zero, then the corresponding term is set to zero.

m_c is required to greater than or equal to zero. If it is zero, then the corresponding term is set to zero.

m_d is required to be greater than zero.

Definition at line 317 of file FalloffFactory.cpp.

## Constructor & Destructor Documentation

 SRI5 ( )
inline

Constructor.

Definition at line 321 of file FalloffFactory.cpp.

## Member Function Documentation

 virtual void init ( const vector_fp & c )
inlinevirtual

Initialization of the object.

Parameters
 c Vector of five doubles: The doubles are the parameters, a, b, c, d, and e of the SRI parameterization

Reimplemented from Falloff.

Definition at line 328 of file FalloffFactory.cpp.

References Cantera::fp2str(), SRI5::m_a, SRI5::m_b, SRI5::m_c, SRI5::m_d, and SRI5::m_e.

 virtual void updateTemp ( doublereal T, doublereal * work ) const
inlinevirtual

Update the temperature parameters in the representation.

The workspace has a length of two

Parameters
 T Temperature (Kelvin) work Vector of working space representing the temperature dependent part of the parameterization.

Reimplemented from Falloff.

Definition at line 353 of file FalloffFactory.cpp.

References SRI5::m_a, SRI5::m_b, SRI5::m_c, SRI5::m_d, and SRI5::m_e.

 virtual doublereal F ( doublereal pr, const doublereal * work ) const
inlinevirtual

The falloff function.

This is defined so that the rate coefficient is

$k = F(Pr)\frac{Pr}{1 + Pr}.$

Here $$Pr$$ is the reduced pressure, defined by

$Pr = \frac{k_0 [M]}{k_\infty}.$

Parameters
 pr reduced pressure (dimensionless). work array of size workSize() containing cached temperature-dependent intermediate results from a prior call to updateTemp.
Returns
Returns the value of the falloff function $$F$$ defined above

Reimplemented from Falloff.

Definition at line 361 of file FalloffFactory.cpp.

References Cantera::SmallNumber.

 virtual size_t workSize ( )
inlinevirtual

The size of the work array required.

Reimplemented from Falloff.

Definition at line 367 of file FalloffFactory.cpp.

## Member Data Documentation

 doublereal m_a
protected

parameter a in the 5-parameter SRI falloff function. This is unitless.

Definition at line 373 of file FalloffFactory.cpp.

Referenced by SRI5::init(), and SRI5::updateTemp().

 doublereal m_b
protected

parameter b in the 5-parameter SRI falloff function.

This has units of Kelvin.

Definition at line 377 of file FalloffFactory.cpp.

Referenced by SRI5::init(), and SRI5::updateTemp().

 doublereal m_c
protected

parameter c in the 5-parameter SRI falloff function.

This has units of Kelvin.

Definition at line 381 of file FalloffFactory.cpp.

Referenced by SRI5::init(), and SRI5::updateTemp().

 doublereal m_d
protected

parameter d in the 5-parameter SRI falloff function. This is unitless.

Definition at line 384 of file FalloffFactory.cpp.

Referenced by SRI5::init(), and SRI5::updateTemp().

 doublereal m_e
protected

parameter d in the 5-parameter SRI falloff function. This is unitless.

Definition at line 387 of file FalloffFactory.cpp.

Referenced by SRI5::init(), and SRI5::updateTemp().

The documentation for this class was generated from the following file: