Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
Forum Home
Login
Register
PhreeqcUsers Discussion Forum
»
Processes
»
Reactive transport modelling
»
Flux boundary conditon
« previous
next »
Print
Pages: [
1
]
Go Down
Author
Topic: Flux boundary conditon (Read 960 times)
Pak
Top Contributor
Posts: 79
Flux boundary conditon
«
on:
April 25, 2016, 09:21:22 AM »
Dear all,
I wonder about how is implemented the flux boundary condition in Phreeqc. If I have C(xi, t) = C0 + (D/v)* (dC/dx)
where xi is the ghost cell at the beggining or at the end. I wonder how C0 is known, if I have for instance the following input:
Solution 0
...
Solution 1-20
...
Transport 1-20
...
- boundary_conditions flux flux
...
I assume that c0 at the first cell would be the value in Solution 0, but what is the value for c0 at the end of the domain, is it the value in solution 20? or it is 0; If it is the value in solution 20, does it mean that it will change during the simulation?
Thanks
Logged
dlparkhurst
Top Contributor
Posts: 1361
Re: Flux boundary conditon
«
Reply #1 on:
April 26, 2016, 03:26:36 PM »
To be honest, I am not completely sure how the flux boundary is implemented. I am pretty sure that, assuming forward flow in TRANSPORT, solution 21 will be defined by advection from the column (and perhaps equal to solution 20 for the first step before advection). It will then be used for the flux boundary calculation.
I know that solution 20 will vary during the simulation.
Logged
Print
Pages: [
1
]
Go Up
« previous
next »
PhreeqcUsers Discussion Forum
»
Processes
»
Reactive transport modelling
»
Flux boundary conditon