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WOLFRAM|DEMONSTRATIONS PROJECT

Concentrations of Multiple Reacting Species in a Semi-Infinite Region

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size
row
column
value
x
t
v
D
x max
slider max
plot
plot of the species number
1
2
3
4
5
0.2
0
0
0
0
-0.1
0.1
0
0
0
0
-0.03
0.02
0
0
0
-0.02
0
0.02
0
0
-0.01
0
0
0.02
x = 1, t = 1, v = 1, D = 0.4, xmax= 15, smax= 15
C1(1 , 1)= 0.589, C1(1 , ∞)= 0.83
A new matrix method is demonstrated for the solution of partial differential equations coupled with first-order reactions representing multi-species reactive transport. In contrast to existing methods, the coupling matrix can have multiple eigenvalues.
The blue and orange curves show steady-state and transient concentrations for each species in a semi-infinite region at a given time. The buttons enable you to choose multi-species problems for a variety of parameters. The default values are taken from [6, p. 188, Table 1].
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