Search found 6 matches

by Horst
Mon Jan 16, 2012 1:33 pm
Forum: Soil Physics with Hydrus
Topic: Heat Transport Example p. 161
Replies: 5
Views: 9570

Thank you for the remark about the errata. I did not know it existed.
by Horst
Fri Jan 13, 2012 2:04 pm
Forum: Soil Physics with Hydrus
Topic: Heat Transport Example p. 161
Replies: 5
Views: 9570

Heat Transport Example p. 161

Hello, I am currently reading the Soil Physics with Hydrus book and enjoy it very much. I have reproduced the example given in the chapter "Heat Flow in Soils" from p. 161-166 (I use Hydrus 1-D, version 4.14). What puzzles me is that the temperatures in 10 and 50 cm are lower in my simulation, than ...
by Horst
Mon Dec 05, 2011 10:10 am
Forum: HP1 (HYDRUS-1D - PHREEQC)
Topic: Unit of specific rate
Replies: 5
Views: 8212

Thank you very much.
by Horst
Mon Dec 05, 2011 9:28 am
Forum: HP1 (HYDRUS-1D - PHREEQC)
Topic: Unit of specific rate
Replies: 5
Views: 8212

Sorry I missed one point.
I specified the units for my input concentrations as [mmol/kgw] (in the "Definition of Solute Composition" window). Do these units also apply to the specific rate?
by Horst
Mon Dec 05, 2011 9:22 am
Forum: HP1 (HYDRUS-1D - PHREEQC)
Topic: Unit of specific rate
Replies: 5
Views: 8212

Thank you for your fast reply. I have been thinking about this quite a while and you helped me a lot. Actually I applied the model to descripe the leachate of column experiments. As I did not measure specific surfaces for my reactants I lumped the specific rate and the specific surface into one para...
by Horst
Fri Dec 02, 2011 3:56 pm
Forum: HP1 (HYDRUS-1D - PHREEQC)
Topic: Unit of specific rate
Replies: 5
Views: 8212

Unit of specific rate

Hello, I have a little problem with the unit of the specific rate. I modeled kinetically limitted gypsum dissolution in a 25 cm column in HP1. Choosen units in HP1: Length in [cm] Time in [h] Concentrations in [mmol/kgw] My rate expressions is: RATES Gypsum -start 10 A = parm(1) #surface area 20 V =...