Arrhenius Class Reference

Arrhenius reaction rate type depends only on temperature. More...

#include <RxnRates.h>

Public Member Functions
	Arrhenius ()
	Default constructor. More...
	Arrhenius (const ReactionData &rdata)
	Constructor from ReactionData. More...
	Arrhenius (doublereal A, doublereal b, doublereal E)
	Constructor. More...
void	update_C (const doublereal *c)
	Update concentration-dependent parts of the rate coefficient. More...
doublereal	update (doublereal logT, doublereal recipT) const
	Update the value of the logarithm of the rate constant. More...
doublereal	updateRC (doublereal logT, doublereal recipT) const
	Update the value the rate constant. More...
void	writeUpdateRHS (std::ostream &s) const
doublereal	activationEnergy_R () const

Static Public Member Functions
static int	type ()
	return the rate coefficient type. More...
static bool	alwaysComputeRate ()

Protected Attributes
doublereal	m_logA
doublereal	m_b
doublereal	m_E
doublereal	m_A

Detailed Description

Arrhenius reaction rate type depends only on temperature.

A reaction rate coefficient of the following form.

\[ k_f = A T^b \exp (-E/RT) \]

Definition at line 31 of file RxnRates.h.

Constructor & Destructor Documentation

Arrhenius ( )

inline

Default constructor.

Definition at line 40 of file RxnRates.h.

Arrhenius ( const ReactionData &  rdata )

inlineexplicit

Constructor from ReactionData.

Definition at line 47 of file RxnRates.h.

Arrhenius ( doublereal  A, doublereal  b, doublereal  E  )

inline

Constructor.

Parameters

A	pre-exponential. The unit system is (kmol, m, s). The actual units depend on the reaction order and the dimensionality (surface or bulk).
b	Temperature exponent. Non-dimensional.
E	Activation energy in temperature units. Kelvin.

Definition at line 64 of file RxnRates.h.

Member Function Documentation

static int type ( )

inlinestatic

return the rate coefficient type.

Definition at line 35 of file RxnRates.h.

void update_C ( const doublereal *  c )

inline

Update concentration-dependent parts of the rate coefficient.

For this class, there are no concentration-dependent parts, so this method does nothing.

Definition at line 80 of file RxnRates.h.

doublereal update ( doublereal  logT, doublereal  recipT  ) const

inline

Update the value of the logarithm of the rate constant.

Note, this function should never be called for negative A values. If it does then it will produce a negative overflow result, and a zero net forwards reaction rate, instead of a negative reaction rate constant that is the expected result.

Definition at line 91 of file RxnRates.h.

doublereal updateRC ( doublereal  logT, doublereal  recipT  ) const

inline

Update the value the rate constant.

This function returns the actual value of the rate constant. It can be safely called for negative values of the pre-exponential factor.

Definition at line 102 of file RxnRates.h.

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

• RxnRates.h