1. Combining ArcView and naUTilus for Municipal Sewers
By: Kimberly Martin
CE 394K.3 – GIS in Water Resources
21 November 2000

2. Combining ArcView and naUTilus for Municipal Sewers
Background on naUTilus
AcrView / naUTilus Link
Application to Austin
Current Project Status

3. Overview of naUTilus
Estimate VOC emissions from industrial sewer networks
Fundamental Principles
Fluid Mechanics
Mass Transfer
Fortran-based computer model
Text-only Input and Output

4. naUTilus Model Sewer Characteristics Flow Data Branch Diameter Slope
Drop Height
Node Type
Junction
Manhole
Drain
Flow Data
Concentration
Temperature

5. Downfall of naUTilus
USER FRIENDLY?
No !

6. ArcView / naUTilus Interface
Developed by Cindy How
33 Avenue Scripts
Graphical User Interface
Input Flow Data and Sewer Characteristics

7. Austin Sewer System ~70,000 Sewer Stretches ~70,000 Manholes
Includes Abandoned and Proposed Sewers

8. Sewer Selection Research Project VOC Tracer Studies Model Calibration
Large Scale Modeling of Municipal Sewer Emissions

9. Procedure Data Acquisition Use network features in Arc/Info
Injection Point
Sampling
Point 1
Data Acquisition
Use network features in Arc/Info
Divide sewer network
Apply naUTilus interface in ArcView
Estimate missing parameters
Sampling
Point 2
Sampling
Point 3
To Treatment Plant

10. Anticipated Results Visual display of emission results from OSBL
Compare emission values with experimental results

11. Future Work This semester… In the next 18 months…
Get the interface working
Model first experimental stretch
In the next 18 months…
Model the other three experimental stretches
Adjust model as necessary for municipal applications
Model a large municipal sewer network