Search found 4 matches

by ikipkemoi
Thu May 16, 2019 11:11 am
Forum: Hydrus 1D
Topic: Question on hCritA
Replies: 3
Views: 392

Re: Question on hCritA

Thank you prof.

I have calculated hCritA and the values are within the recommended 150 m to -1000 m, eq. 2.74 helped, but help is missing the 'g'. Thanks a lot.
IK
by ikipkemoi
Wed May 15, 2019 4:14 pm
Forum: Hydrus 1D
Topic: Question on hCritA
Replies: 3
Views: 392

Question on hCritA

Hello Team Hydrus, I am using the formula Hr = exp[h*M*g/RT] to calculate hCritA. It is given that Hr is the relative humidity, h is the pressure head, M is the molecular weight of water [M/mol] (=0.018015 kg/mol), R is the universal gas constant [ML^2/T^2/K/M] (= 8.314 kg m^2/s^2/K/mol, J/mol/K), a...
by ikipkemoi
Thu Apr 11, 2019 10:38 am
Forum: Hydrus 1D
Topic: Water Transport
Replies: 2
Views: 341

Re: Water Transport

Thank you Prof Jirka.

What does anyone in the forum think about ETo, the data I am using only Precipitation and ETo of course with soil hydraulic parameters?
by ikipkemoi
Wed Apr 10, 2019 4:44 pm
Forum: Hydrus 1D
Topic: Water Transport
Replies: 2
Views: 341

Water Transport

Hi, I am modelling basic water transport in a soil column. I have Precipitation (entered to precip) data and ETo (entered to rtop) data as variable boundary conditions, from the definitive concept of ETo, I am assuming that the evaporative demand of the atmosphere can be considered independent of cr...