Equilibrium_CDE_Problem

[s.laliu]

Dear Jirka,

I have to simulate the next experiment as follows:
- in situ experiment (di-pole test at a depth of about 350 m);
- horizontal groundwater flow and contaminant transport in clay rock (fractured): 110 cm;
- total period simulation, final time: 1440 minutes;
- Dirichlet (inflow); zero-gradient (outflow);
- constant concentration at inflow point for initial specific period and zero after the period;
- Darcy flow velocities, fixed value = 0.135 cm/min;
- total porosity = 0.3;
- matrix porosity = 0.137;
- fracture porosity = 0.163;
- diffusion in water [cm3/min] = 1.03E-3;
- fracture dispersivity [cm] = 2.8;
- matrix fracture interaction [1/min] = 2.3E-3;
- density of rock [g/cm3] = 1.42;
- pulse duration = 4.5 minutes;
- input concentration [mg/cm3] = 1.5

First, I have to simulate equilibrium model, then mobile-immobile or dual-porosity. I attached print-screen of my equilibrium simulation model, the graph dosen't look good at all and I don't know why.

[Jirka]

Based on the information you provided, I can only conclude that you do something wrong. J.

[s.laliu]

Dear Jirka,

I attached a document with the settings I have selected for my model, maybe you can tell me where and what is wrong.

Thank you!

[Jirka]

From your posts, it seems to me that you are rather new to HYDRUS-1D (we will not be able to help you with such trivial questions). You should do some of the tutorials first:

a. either those posted on the HYDRUS-1D website (http://www.pc-progress.com/en/Default.a ... -tutorials),

b. or from the CSIRO Tutorial eBook: https://www.pc-progress.com/Downloads/P ... 0_2018.pdf

Rassam, D., J. Šimůnek, D. Mallants, and M. Th. van Genuchten, The HYDRUS-1D Software Package for Simulating the Movement of Water, Heat, and Multiple Solutes in Variably Saturated Media: Tutorial, Version 1.00, CSIRO Land and Water, Adelaide, Australia, 183 pp., ISBN 978-1-4863-1001-2, 2018. Appendices I, II, and III.

The examples for the CSIRO Tutorial eBook can be downloaded at:
https://www.pc-progress.com/en/Default. ... torialBook

J.

[s.laliu]

Dear J.

I was waiting for some other kind of help, but thanks anyway!

S.L.