First order reaction rate imposed

First order reaction rate imposed

Ver: 1

DESCRIPTION

To calculate the reaction rate of reactant on boundary set, Polyflow uses the following flux expression known as a first order reaction rate:

q(x) = Ksurf * c * x

where q(x) is the normal projection of molar flux of reactant, c is the molar concentration of reactant, x is the mole fraction of reactant and Ksurf is a coefficient calculated by

Ksurf = proba * ( Rg * T / 2 * pi * Mi ) ** 0.5

in which proba is the reaction probability, Rg is gas constant, T is temperature,
pi = 3.1415926

Mi is molecular weight of reactant.

Here, the user can modify the current values of parameters defining the coefficient Ksurf.

By default, proba = 1, Rg = 8.31430, Mi = 1

OPTIONS

-1
Upper level menu

The current values are accepted

1
Modification of proba

The current value of proba is modified

2
Modification of Rg

The current value of Rg is modified

3
Modification of Mi

The current value of Mi is modified

NOTES The units for the parameters are :

Parameter	Mass	Length	Time	Temperature	Mole
Ksurf	-	-1	-1	-	-
proba	-	-	-	-	-
Rg	1	2	-2	1	-1
Mi	1	-	-	-	-1
T	-	-	-	1	-

SEE ALSO

-1	Upper level menu
	The current values are accepted
1	Modification of proba
	The current value of proba is modified
2	Modification of Rg
	The current value of Rg is modified
3	Modification of Mi
	The current value of Mi is modified