Search found 6 matches

by Hue
Wed Nov 06, 2019 9:33 am
Forum: Hydrus 1D
Topic: Competitive sorption, solute concentration initial conditions
Replies: 5
Views: 1450

Re: Competitive sorption, solute concentration initial conditions

The attached zip files include the 9-solute model and a single-solute model for one of those solutes that was bad in the former but good in the latter. Much appreciated for your thoughts.
Regards,
Hue
by Hue
Tue Nov 05, 2019 9:49 pm
Forum: Hydrus 1D
Topic: Competitive sorption, solute concentration initial conditions
Replies: 5
Views: 1450

Re: Competitive sorption, solute concentration initial conditions

Thank you, Jirka, for your quick and short reply. It was helpful. Regarding item 2, I ran again my simulation for 9 different chemicals and still got bad mass balances, while I got good results simulating them separately. I would be grateful if you could have a look at my model. I can send you the f...
by Hue
Tue Nov 05, 2019 1:27 pm
Forum: Hydrus 1D
Topic: Competitive sorption, solute concentration initial conditions
Replies: 5
Views: 1450

Competitive sorption, solute concentration initial conditions

Hi Jirka and all, I am using two-site sorption model to simulate a flow-through column of soil that is contaminated with multiple perfluorinated chemicals (9+) to see how they are desorbed over time. The infiltrating water is clean. The contaminants in the soil initially can be only in solid phase (...
by Hue
Mon Jul 22, 2019 12:50 pm
Forum: Hydrus 1D
Topic: Boundary condition implementation in Hydrus-1D
Replies: 4
Views: 865

Re: Boundary condition implementation in Hydrus-1D

Thanks Jirka. That really solved the puzzle.
by Hue
Thu Jul 18, 2019 11:24 am
Forum: Hydrus 1D
Topic: Boundary condition implementation in Hydrus-1D
Replies: 4
Views: 865

Re: Boundary condition implementation in Hydrus-1D

Thank you, Jirka, for the quick comment. We will be looking at the 3 analytical solutions you mentioned. With our cases, I should have been clearer. As an analytical solution to the advection-dispersion equation (ADE), the Ogata-Banks solution (1961) we used has the following form: C(x,t) = (Co/2) *...
by Hue
Wed Jul 17, 2019 8:48 am
Forum: Hydrus 1D
Topic: Boundary condition implementation in Hydrus-1D
Replies: 4
Views: 865

Boundary condition implementation in Hydrus-1D

Dear Hydrus team and Forum Members, We simulated a simple conservative tracer experiment in a homogeneous soil column (L=100cm), with constant hydraulic head boundary conditions inducing a saturated column with flow from top to bottom. We are simulating a constant injection of a conservative tracer ...