dsm2, version 7
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DSM2, Version 7
CWEMFFebruary 26, 2007
Eli Ateljevich, PhD Department of Water Resources
Delta Modeling Section
Talk Outline
• Information management
• Input changes and GUI
• New model features
• Status
Database Information Management Goals
• Consistency
• Version control
• Scenario management
• Extensibility and reuse of common items
• Transparency
• NOT an archive of runs
Layer Based Input
12
3
4
56
2 (revised)
7 (added)
Grid layer 1
Grid layer 2
IO System and GUI
• Graphical user interface (GUI) front end for database
• Timed IO stored in DSS, assigned in GUI
• Some run-specific items can be input in text
• PTM is text based
• HDF5 is used for the “tidefile”
DSM2 Input GUI
New Model Features
• Gates with multiple, more physical structures
• User-written operating rules
• More reliable solvers
• Readable tidefile using HDF5
• CONDOR-friendly for batch simulations
• Old/inconsistent features deprecated
Gates With Multiple Structures
Physical Gate Positions
elev
heightelev
Variable weir crest
Radial/sluice
Operating Rules
Steering
Input
Model
observation
dec
isio
n
Example – Operate a Gate Based on Water Levels
Time
Upper Stage Trigger
Lower Stage Trigger
Close Gate
Open Gate
Sta
ge
(ft
)
DSM2 Database Interface
HDF5 Tidefile
• Robust – designed for NASA satellite data
• Tools – both DWR and open source
• More useful data and better structure coming soon:– QUAL – Stage (as opposed to flow area)
Numerical Reliability: DB vs Text
• Better closure in HYDRO
– Maxiter nearly eliminated
– Closure based on solution, not slowdown
– Continuity ensured
• Small fixes in QUAL nonconservative, conservative same
• PTM velocities time-centered
Do They Give The Same Answer?
• Solutions in identical cases same• Some production items have been “translated”:
– Geometry: DB has one kind of cross-section– Gates: make use of the new features
• Testing includes isolated calculations (e.g. gate equations) and production runs
• Time centering in PTM big improvement for some situations
Project Status
• Production DSM2 runs from desktop (Access) and Informix database in progress
• Delta Modeling Section conversion mandated within a month– 2-day training course and tutorials completed by all
• External use within 6 months
Contact
• Eli Ateljevich eli@water.ca.gov
Ralph Finch, Tawnly Pranger, Edward Diamond, Jon Shu, Jeff Galef
Acknowledgments
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