Search found 4 matches

by ansleybrown1337
Fri Jan 17, 2020 5:28 pm
Forum: Hydrus 1D
Topic: Effects of Gypsum on Ca precipitation and EC
Replies: 0
Views: 9805

Effects of Gypsum on Ca precipitation and EC

Hello Hydrus Forums, I’m trying to measure the effects of gypsum on EC in the UNSATCHEM model (particularly a subsect of that model, named “ExtractChem”). The inputs I have to run the model are as follows: input_table.png imgur link as backup: https://imgur.com/9GctqdB However, including Gypsum in t...
by ansleybrown1337
Fri Jun 07, 2019 5:00 pm
Forum: Hydrus 1D
Topic: How Does H1D Calculate Osmotic Coefficients?
Replies: 3
Views: 1503

Re: How Does H1D Calculate Osmotic Coefficients?

Thank you for the quick reply, Jirka! I'm reading both of these references today, and I'm discovering how big a task this was for you to code up inside of UNSATCHEM! Since I'm not actually able to get the code however, maybe you could just clarify the purpose of some files that H1D uses for Pitzer e...
by ansleybrown1337
Thu Jun 06, 2019 8:38 pm
Forum: Hydrus 1D
Topic: How Does H1D Calculate Osmotic Coefficients?
Replies: 3
Views: 1503

How Does H1D Calculate Osmotic Coefficients?

Hello H1D Community! I am trying to learn about the calculation of osmotic pressure in H1D, especially in the case of using UNSATCHEM for solute transport. What I don't understand is how the osmotic coefficients are calculated (i.e. the 'phi') in the EQUIL.OUT file. In the H1D manual (p. 96; Section...
by ansleybrown1337
Tue Feb 26, 2019 6:32 pm
Forum: Hydrus 1D
Topic: Simulating EC at Differing water contents
Replies: 1
Views: 1140

Simulating EC at Differing water contents

Hey All, I'm have ECe data collected from saturated paste extracts (SPE), as well as EC of actual pore water (ECpw) data that was collected simultaneously to observe differences of EC at different moisture contents in gypsiferous soils. I'm trying to identify inflation of ECe due to excess gypsum di...