Search found 19 matches

by ahmed_almayahi
Fri Dec 14, 2018 3:23 pm
Forum: HYDRUS (2D/3D)
Topic: Err: "Cannot modify because "" is still running"
Replies: 6
Views: 2292

Re: Err:

Valid explanation. Your suggestion worked very well

Thanks a lot
by ahmed_almayahi
Thu Dec 13, 2018 6:03 pm
Forum: HYDRUS (2D/3D)
Topic: Err: "Cannot modify because "" is still running"
Replies: 6
Views: 2292

Re: Err:

Hi Mirek
your explanation is valid. I hope that Jirka could help us solving the problem
by ahmed_almayahi
Thu Dec 13, 2018 12:44 pm
Forum: HYDRUS (2D/3D)
Topic: Err: "Cannot modify because "" is still running"
Replies: 6
Views: 2292

Re: Err:

Dear HYDRUS users I encountered the same problem while modelling water and solute, . I am using HYDRUS-3D version 3.01.1360. I tried to run the simulation several times until it finished. Once i press enter to continue, no results were displayed. I thought there might be something wrong with the mod...
by ahmed_almayahi
Wed Dec 12, 2018 8:31 pm
Forum: HYDRUS (2D/3D)
Topic: Variable flux to simulate wicking of water into soil
Replies: 4
Views: 723

Re: Variable flux to simulate wicking of water into soil

That really solve the problem

Thanks
by ahmed_almayahi
Wed Dec 12, 2018 4:21 am
Forum: HYDRUS (2D/3D)
Topic: Variable flux to simulate wicking of water into soil
Replies: 4
Views: 723

Re: Variable flux to simulate wicking of water into soil

Dear prof I tried to do 3 different things : 1. set a variable flux <ks for the soil 2. use the same value of the flux through all the simulation time. In this condition the variable flux is constant. 3. i was also suspecting that the problem could be due to the sign (-/+) of the flux although the m...
by ahmed_almayahi
Tue Dec 11, 2018 7:52 am
Forum: HYDRUS (2D/3D)
Topic: Variable flux to simulate wicking of water into soil
Replies: 4
Views: 723

Variable flux to simulate wicking of water into soil

Dear HYDRUS experts I am trying to model water and solute transport in a silt loam soil irrigated via wicking from the bottom using HYDRUS 2D. I assigned var.flux2 bc for the wicking point at the bottom of the soil. I intended to simulate irrigation via wicking every 3 days [1 day irrigation via wic...
by ahmed_almayahi
Sat Dec 08, 2018 8:18 pm
Forum: HYDRUS (2D/3D)
Topic: T3D Internal Error
Replies: 5
Views: 853

Re: T3D Internal Error

Dear Mirek,
Thanks for your reply with detailed explanation. I followed your advice and it really solve the problem. I know that my biggest mistake was to use the boundary surfaces of the internal solids as boundary surfaces for solid 2.

I really thank you

Regards
by ahmed_almayahi
Fri Dec 07, 2018 11:02 am
Forum: HYDRUS (2D/3D)
Topic: T3D Internal Error
Replies: 5
Views: 853

Re: T3D Internal Error

Dear HYDRUS 3D users I am also doing 3D modelling on my project and now i got the same problem. I Red problem description and suggestion but i could not identify how to solve it in my model. Could anyone help me to detect the exact reason on my model and how can i solve it. I really want to learn ho...
by ahmed_almayahi
Mon Aug 13, 2018 11:13 am
Forum: HYDRUS (2D/3D)
Topic: Simulation is very slow or i got NaN in the simulation run
Replies: 1
Views: 374

Simulation is very slow, take long time and i got NaN in the simulation run

Dear Hydrus experts, I am still unable to solve my problem with simulation of root water uptake in a box of silt loam (length=40 cm, width=40 and height=28) for 30 days. I am using HYDRUS 2D/3D professional version 2. I specify 2 cm mesh size, no flow BC from all side of the box except the surface. ...
by ahmed_almayahi
Sun Aug 12, 2018 12:59 pm
Forum: HYDRUS (2D/3D)
Topic: Questions about root water uptake modeling
Replies: 2
Views: 424

Re: Questions about root water uptake modeling

Dear prof. Simunek,
Thank you very much for the help
I will install the new version

Regards
by ahmed_almayahi
Sat Aug 11, 2018 5:12 pm
Forum: HYDRUS (2D/3D)
Topic: Simulation is very slow or i got NaN in the simulation run
Replies: 1
Views: 374

Simulation is very slow or i got NaN in the simulation run

Dear Hydrus users, I am running a simulation of root water uptake in a box of silt loam (length=40 cm, width=40 and height=28) for 30 days. I set a mesh size of 2 cm. In the time variable BC, i set evaporation= 1.5 cm/day, transpiration=0.8 cm/day for sweet corn and area associated with transpiratio...
by ahmed_almayahi
Sat Aug 11, 2018 4:26 pm
Forum: HYDRUS (2D/3D)
Topic: Questions about root water uptake modeling
Replies: 2
Views: 424

Questions about root water uptake modeling

Dear Hydrus users I am currently trying to simulate root water uptake (sweet corn) in a box of silt loam soil of dimensions length=40 cm, width=40 cm and height=28 (see figure 1). This is a 3D modeling in hydrus (2D/3D) version 2.05.0200. I am using Feddes model. However, i encountered many challeng...
by ahmed_almayahi
Thu Aug 02, 2018 8:22 am
Forum: HYDRUS (2D/3D)
Topic: Boundary condition can not be set...surface does not lie on domain boundary
Replies: 5
Views: 693

Re: Boundary condition can not be set...surface does not lie on domain boundary

Dear Mirek,
Thank you very much for your continuous help
Thank you for teaching me

Regards
by ahmed_almayahi
Wed Aug 01, 2018 4:16 pm
Forum: HYDRUS (2D/3D)
Topic: Boundary condition can not be set...surface does not lie on domain boundary
Replies: 5
Views: 693

Re: Boundary condition can not be set...surface does not lie on domain boundary

Dear Prof Simunek
Thanks for the reply,
Do you have any suggestions on how can i make it. How can i create boundary at the bottom opening?
by ahmed_almayahi
Wed Aug 01, 2018 1:46 pm
Forum: HYDRUS (2D/3D)
Topic: Boundary condition can not be set...surface does not lie on domain boundary
Replies: 5
Views: 693

Boundary condition can not be set...surface does not lie on domain boundary

Dear HYDRUS experts, Can you help me on solving this problem. I am at the moment trying to model my system (wick irrigation) consist of a sand cylinder inside a silt box. Now i added a 2 cm sand mulch on top of the silt box. However, when i was assigning boundary condition at the bottom of the sand ...