Chemflow 2000 Project 2

This project is a self-training exercise using the Chemflow software.

Perform the selected numerical experiments that are found at the end of the CHEMFLO manual. Perform the tasks as required by the problem statements. Save screen captures that prove you did the work. Provide text to answer the questions as stated in the numerical experiments.

Numerical Experiments for Water Movement

2. Infiltration of Water from Rainfall or Sprinkler Irrigation plus first Additional Work task

• Initial situation (25)
  • Confirm you used the proper input values
  • Graphs of flux density (infiltration rate) and cumulative flux (infiltration) at the soil surface as function of time
  • Answers to the four questions
• Lower Ksat situation (20)
  • Confirm you used the proper input values
  • Graphs of flux density (infiltration rate) and cumulative flux (infiltration) at the soil surface as function of time
  • Answers to the four questions
    

8. Influence of Initial Water Content upon Water Movement plus Additional Work task

• Initial situation (40)
  • Confirm you used the proper input values
  • Graphs or table of flux density (infiltration rate) and cumulative flux (infiltration) at the soil surface as function of time
  • Graph of moisture content vs. depth at 6 hours for each soil condition
  • Answers to the six questions
• Lower Ksat situation (35)
  • Confirm you used the proper input values
  • Graphs or table of flux density (infiltration rate) and cumulative flux (infiltration) at the soil surface as function of time
  • Graph of water content vs. depth at 6 hours for each soil condition
  • Answers to the six questions

Numerical Experiments for Water and Chemical Movement

1. Chemical Movement during Infiltration Due to Rainfall plus Additional Work tasks

• Initial situation (35)
  • Confirm you used the proper input values
  • Graphs of water content vs. distance and concentration vs. depth at multiple times up to 6 hrs
  • Graphs of cumulative flux of chemical and flux of water at selected depths, at least three
  • Answer the two questions
• Second situation (15)
  • Confirm you used the proper input values
  • Graphs of water content vs. distance and concentration vs. depth at 18 hr (end of storm)
  • Answer the two questions

3. Influence of Adsorption on Chemical Movement (includes all work from previous experiment)

• Initial situation (30)
  • Confirm you used the proper input values, two different partition coefficients
  • Graphs of water content vs. distance and concentration vs. depth at multiple times up to 6 hrs for both partition coefficients
  • Graphs of concentration vs. time at soil surface for both partition coefficients, plus a third graphs with partition coefficient of 0
  • Answer the two questions