Workshop Overview | Lecture Outlines | Schedule | Instructors | Registration | PSU Information | Portland Information

The following outline is an overview of each lecture:

Hydrodynamic Modeling - S. Wells
  1. Overview
  2. Governing Momentum and Continuity Equations - governing equations used in CE-QUAL-W2, physical significance of each term, assumptions leading to derivation and limitations of governing equation
  3. Turbulence closure hypotheses (big picture look) – choices in Version 3
  4. Auxiliary functions of the hydrodynamic model – internal weirs, weirs/spillways, gates, pipes, selective withdrawal, wind shear, bottom friction, inflow/outflow distributions
  5. Parameters required for hydrodynamic calibration
Water Quality Modeling - S. Wells
  1. Overview
  2. Advective-Diffusion Equation - governing equation used in CE-QUAL-W2 and basic assumptions leading to derivation (limitations of governing equation)
  3. Source/Sink term: dissolved oxygen, temperature, nutrients, algae, pH, TDS, bacteria (big picture overview for each water quality parameter)
  4. Kinetic parameters needed for source/sink terms (specifics)
Numerical Scheme – A brief summary of the numerical schemes for solving the Momentum Equation and Mass/Heat Balance Equations - S. Wells
Elements of Numerical Model Performance and Expected Performance of Numerical Model – S. Wells
1.     Set-up
2.     Calibration
1.     Calibration for the wrong reasons
2.     Elements of a well-calibrated model
3.     Validation ?
4.     Application
CE-QUAL-W2 setup
Overview of CE-QUAL-W2 – 'Rules of the Road'
  1. Preparation of input files
    1.1. Bathymetry file
    1.2. Control files
    1.3. Time-varying data files
  2. Model calibration
    2.1. Temperature
    2.2. Water quality
  3. W2 Control File Inputs
  4. W2 Input/Output Files
Case Studies - Computer Laboratory

The computer laboratory is in the Northwest Center for Engineering, Science and Technology (1930 SW Fourth Avenue, Portland, Oregon). All software for the class will be provided to students in the computer laboratory. We will be using computers in our computer lab since we have developed software to easily evaluate run results. Students will be able to download all model files used in the workshop for evaluation later. You will not need to bring your own laptop. Case studies we will consider are shown below.

Lab #

Modeling area

Case Study

Specific Areas

1

Hydraulic

Calibration-Bathymetry
set-up

Conesus Lake, New York

Model calibration to water surface elevation, computing a volume balance on a reservoir incorporating seepage, tributary inflow, and distributed inflows; impact of ice cover

2

Numerical

accuracy

DeGray Reservoir

Arkansas (from T. Cole)

Effect of model predictions based on grid resolution and numerical solution scheme

3,4,5

Temperature calibration

Long Lake, Washington; Croton Reservoir, NY (from T. Cole);
Bluestone Reservoir
West Virginia (form T. Cole)

Calibration of stratified lake/reservoir temperature profiles

6

Water quality management alternatives

Wahiawa Reservoir
Hawaii

Use of model to improve dissolved oxygen and algae, evaluation of nutrient dynamics, sediment diagenesis

7

Estuary modeling water quality calibration

Columbia Slough

Portland, Oregon

water quality calibration for estuary (dissolved oxygen)

8

River Shading/Periphyton Example

Spokane River

Temperature control in a river by shading, control of periphyton growth, particle transport