Search found 12 matches

by theodorb
Tue Nov 19, 2019 9:55 pm
Forum: Hydrus 1D
Topic: Errors in solute when surface layer BC is applied
Replies: 5
Views: 486

Re: Errors in solute when surface layer BC is applied

Strange. The files you've attached run OK for me as well but the ones I've sent didn't.
I'll look into it. Thanks a lot anyway.

Theodor Bughici
by theodorb
Tue Nov 19, 2019 5:55 pm
Forum: Hydrus 1D
Topic: Errors in solute when surface layer BC is applied
Replies: 5
Views: 486

Re: Errors in solute when surface layer BC is applied

Hi, I have attached the input files.

Thanks,

Theodor Bughici
by theodorb
Tue Nov 19, 2019 1:37 am
Forum: Hydrus 1D
Topic: Errors in solute when surface layer BC is applied
Replies: 5
Views: 486

Errors in solute when surface layer BC is applied

Hi,
I am running a 1D irrigation model with Atmospheric BC allowing a surface layer and standard solute transport. My results are way off when allowing even 1 mm of surface water h. Results are OK, as far as I can say, when h=0.0.

Any idea why this could happen?

Thanks,

Theodor Bughici
by theodorb
Thu Feb 21, 2019 2:52 pm
Forum: Hydrus 1D
Topic: S-shape stress parameters
Replies: 1
Views: 271

S-shape stress parameters

Hi,

Can you tell were is the S-shape stress parameters (Multiplicative stress function) come from? they seem a little high and I would like to know what paper or database are they based upon?

Thanks,
Theodor Bugici
by theodorb
Sun Dec 02, 2018 9:59 am
Forum: Hydrus 1D
Topic: osmotic coefficients
Replies: 2
Views: 398

Re: osmotic coefficients

OK, Thanks!

Theodor
by theodorb
Thu Nov 29, 2018 9:41 am
Forum: Hydrus 1D
Topic: osmotic coefficients
Replies: 2
Views: 398

osmotic coefficients

Hi, I wand to model root water uptake with additive solute stress. How does hydrus calculate the osmotic pressure? my solute units are in mg but hydrus is indifferent to solute units. Is that incorporated in the osmotic coefficients? how are they determined? Thanks ​Theodor Bughici, PhD candidate, P...
by theodorb
Mon Nov 26, 2018 6:35 am
Forum: Hydrus 1D
Topic: 1D with N solutes does not add cTop(i) to ATHMOSPH.IN
Replies: 3
Views: 514

Re: 1D with N solutes does not add cTop(i) to ATHMOSPH.IN

I'm reading, writing and executing HYDRUS externally (with Python) so when I want to change cTop (in the case on 1 solute) I can easily find the data column according to the place of the column title. The documentation also suggests the cTop(i) name given to the i'th solute. If HYDRUS does not add t...
by theodorb
Mon Nov 26, 2018 12:17 am
Forum: Hydrus 1D
Topic: 1D with N solutes does not add cTop(i) to ATHMOSPH.IN
Replies: 3
Views: 514

1D with N solutes does not add cTop(i) to ATHMOSPH.IN

Hi, I'm running HYDRUS 1D with root water uptake and 2 solutes. the data of the two solutes conc. is seen in ATHMOSPH.IN but without column names for the second solute: Pcp_File_Version=4 *** BLOCK I: ATMOSPHERIC INFORMATION ********************************** MaxAL (MaxAL = number of atmospheric dat...
by theodorb
Tue Jul 17, 2018 5:25 am
Forum: Hydrus 1D
Topic: time points on OBS_NOD.OUT
Replies: 3
Views: 631

Re: time points on OBS_NOD.OUT

Thanks for the Reply. It is a problem if I compare RMSE of nodal data between different runs, and every comparison is between different points in time.

But, I understand it is related to the model time steps, so I will word around it.

Thank you very much,
​Theodor Bughici
by theodorb
Mon Jul 16, 2018 6:55 pm
Forum: Hydrus 1D
Topic: time points on OBS_NOD.OUT
Replies: 3
Views: 631

time points on OBS_NOD.OUT

Hi, The length and values of the time output in the OBS_NOD.OUT file seems to change between two runs after changing only the transpiration values, as I want to compare the two results, this poses a serious problem for me. Why is it happening and is there a way to overcome it? Thanks, ​Theodor Bughi...
by theodorb
Mon Jul 02, 2018 9:42 am
Forum: Hydrus 1D
Topic: Hydrus Root Growth problems
Replies: 2
Views: 600

Re: Hydrus Root Growth problems

Thanks a lot for the fast reply.
I'll give it a try.

By the way, Hydrus 1D works very well on Linux.

Theodor
by theodorb
Mon Jul 02, 2018 6:05 am
Forum: Hydrus 1D
Topic: Hydrus Root Growth problems
Replies: 2
Views: 600

Hydrus Root Growth problems

Hi, I am having a lot of trouble trying to use the new root growth module: 1) Outside the examples, Root.in file is not generated (and not clear if all the parameters there can be specified in the GUI). 2) When running the examples, Root.out is being deleted (when I run it on Linux it is generated b...