Search found 35 matches

by Luisa
Tue Apr 26, 2011 4:51 pm
Forum: HYDRUS (2D/3D)
Topic: 3d results: cumulative evaporation
Replies: 3
Views: 1995

Hi, actually I have to agree with Sija - there is a difference between the output format of 2D and 3D (and I have been using version 1.11 since it came out last year). For 3D calculations, the columns cRunoff, cEvapor and cInfiltr are not printed. I have always calculated cEvapor for 3D simulations ...
by Luisa
Fri Apr 22, 2011 6:06 pm
Forum: HYDRUS (2D/3D)
Topic: max number of thickness vectors
Replies: 1
Views: 1033

max number of thickness vectors

Hello,

is it possible to have more than 10000 thickness vectors? I have a hillslope domain (100x200 m) in 1m resolution but the import of my geometry file fails, giving an error message.

Thanks, Luisa
by Luisa
Thu Mar 24, 2011 9:59 pm
Forum: HYDRUS (2D/3D)
Topic: evaporation vegetation + bare soil
Replies: 10
Views: 10409

Hello, I have a question related to this post, and maybe you already answered it. Let's say I have a soil surface with atmospheric BC and also one or several variable flux BC. The evaporation rate that is entered in the time-variable BC window is only applied to the areas where the atmospheric BC is...
by Luisa
Sat Apr 10, 2010 4:37 am
Forum: HYDRUS (2D/3D)
Topic: Hydrus through remote desktop - display problem
Replies: 3
Views: 5244

Hydrus through remote desktop - display problem

Hi, I sometimes run Hydrus on my work computer from home using remote desktop. It all works fine except that the domain is not visible; there is only a black area and the message: "Unable to render the scene. The display settings (Pixelformat) has been changed. Please, restart this application." Can...
by Luisa
Thu Dec 31, 2009 9:29 pm
Forum: HYDRUS (2D/3D)
Topic: Windows 7
Replies: 1
Views: 2630

Windows 7

Hi,

I am about to buy a new laptop, and almost all new machines come with Windows 7 now. Will HYDRUS run on Windows 7 (either 32bit or 64bit)?

Thanks, Luisa
by Luisa
Thu Dec 03, 2009 7:37 pm
Forum: Hydrus 1D
Topic: mobile/immobile water content of subregions
Replies: 1
Views: 1325

mobile/immobile water content of subregions

Hi, I am modeling water flow in a 1 m deep profile, using the dual-porosity model with WC mass transfer. I am interested in the partitioning of the water between mobile and immobile zone, and I divided the profile into 5 subregions. I was hoping to find that information in the balance.out file. This...
by Luisa
Tue Nov 24, 2009 6:13 pm
Forum: Hydrus 1D
Topic: inverse simulation - theta s immobile
Replies: 5
Views: 1886

Hi Jirka, thanks. I am not sure, though, that I understand this. So it means there is no point in checking the box 'fitted?' for theta_s_im (I just checked that - I get the exact same result). What value is assigned to Por? Because I don't define a total porosity somewhere. And it does not seem that...
by Luisa
Tue Nov 24, 2009 5:16 am
Forum: Hydrus 1D
Topic: inverse simulation - theta s immobile
Replies: 5
Views: 1886

Hi Jirka,

yes, omega is set to 0.01 h-1.

Luisa
by Luisa
Tue Nov 24, 2009 2:05 am
Forum: Hydrus 1D
Topic: inverse simulation - theta s immobile
Replies: 5
Views: 1886

inverse simulation - theta s immobile

Hello, I am trying to inversely simulate water flow from a soil column to obtain soil hydraulic parameters. When I try to fit the dual porosity model to the outflow data, it always seems that the parameter theta_sat_immobile is never fitted, even if it's the only parameter checked to be fitted. The ...
by Luisa
Mon May 11, 2009 4:04 pm
Forum: HYDRUS (2D/3D)
Topic: Surface runoff
Replies: 3
Views: 2071

Hi Jirka, what you wrote under 1a) - that would be a boundary condition that is more appropriate for the downslope boundary of a hillslope that is not exposed in a trench, right? I am thinking of this simulation of hillslope flow that we talked about some weeks ago. That would be so great if you imp...
by Luisa
Tue Feb 17, 2009 5:12 am
Forum: HYDRUS (2D/3D)
Topic: running Hydrus through remote desktop
Replies: 1
Views: 1450

running Hydrus through remote desktop

Hello, I am trying to run Hydrus on my desktop computer using remote desktop. When I open Hydrus, however, I get the message that it is a demo version and I need to activate it although the version on my desktop computer is (and has long been) activated. The laptop I am using for the remote access d...
by Luisa
Mon Feb 16, 2009 2:45 am
Forum: HYDRUS (2D/3D)
Topic: modeling semi-arid hillslope
Replies: 3
Views: 2397

Jirka,

I have tried running the simulations with the old (regular) version of Hydrus - I don't get any NaN anymore but the simulations still crash (hAtm and hRoot start oscillating and then explode). :-(

Luisa
by Luisa
Mon Feb 16, 2009 2:13 am
Forum: HYDRUS (2D/3D)
Topic: modeling semi-arid hillslope
Replies: 3
Views: 2397

I am in fact using the testing version (which is markedly faster!). I will try with the old version - hadn't thought about that.

Luisa
by Luisa
Sun Feb 15, 2009 9:46 pm
Forum: HYDRUS (2D/3D)
Topic: modeling semi-arid hillslope
Replies: 3
Views: 2397

modeling semi-arid hillslope

Hi, I have been trying to simulate a hillslope with semi-arid climate and grass/shrub vegetation (i.e. root water uptake model activated). Evaporative fluxes (pE and pT) are therefore much higher than precipitation, and the soil (sandy loam texture) is often very dry, reaching the hCritA value (-150...
by Luisa
Thu Feb 12, 2009 11:44 pm
Forum: HYDRUS (2D/3D)
Topic: surface area associated with transpiration
Replies: 3
Views: 2433

surface area associated with transpiration

Hi, I am wondering if there is a way to determine the surface area of a 3D domain with an irregular, sloping surface a priori. So far I have obtained the surface area after the simulation by dividing the total flux into the domain through the atmospheric boundary (no ET) by the known total input rat...