Grantee Research Project Results
2013 Progress Report: Prediction and quantification of Combined Sewer Outflows under extreme storm events: Flow dynamics and Reduction of Combined Sewer Outflows
EPA Grant Number: R835187Title: Prediction and quantification of Combined Sewer Outflows under extreme storm events: Flow dynamics and Reduction of Combined Sewer Outflows
Investigators: Leon, Arturo
Institution: Oregon State University
EPA Project Officer: Packard, Benjamin H
Project Period: June 1, 2012 through May 31, 2017
Project Period Covered by this Report: June 1, 2013 through May 31,2014
Project Amount: $265,528
RFA: Extreme Event Impacts on Air Quality and Water Quality with a Changing Global Climate (2011) RFA Text | Recipients Lists
Research Category: Climate Change , Earth Sciences - Environmental Science , Aquatic Ecosystems , Air Quality and Air Toxics , Water Quality , Air , Water
Objective:
The project objectives are to:- Develop a mathematical formulation for common cases of overflow discharges (e.g., combined sewer overflows [CSOs]) at vertical shafts and near-horizontal outlets under extreme flow events.
- Implement the mathematical formulation of overflows into a state-of-the-art open source (free and open access) transient flow model that can be used in complex combined sewer systems (CSSs).
- Validate the overflow discharge framework under highly dynamic flow conditions. The Portland CSS (Oregon), which has experienced recent geysering events, will be used as test case.
Progress Summary:
As of August 21, 2014, the following list of accomplishments has been achieved:- The mathematical formulation of common cases of overflow discharges at vertical shafts is under development.
- A 3D CFD two-phase flow model is in validation phase.
- The flow recirculation system that will host the hydraulic model of the Portland CSS is under construction and will be completed in 7 weeks.
Future Activities:
The planned future activities are:- The mathematical formulation of common cases of overflow discharges at vertical shafts will be further developed, validated and implemented into a state-of-the-art transient analysis program Illinois Transient Model (ITM).
- Laboratory experiments of overflow discharges under extreme events (Portland CSS) will be conducted in the Multipurpose River Hydraulics Research Facility at O.H. Hinsdale Wave Research Laboratory at Oregon State University.
- The developed 3D CFD two-phase flow approach will be implemented to an open source CFD model (OpenFoam).
Journal Articles:
No journal articles submitted with this report: View all 17 publications for this projectRelevant Websites:
Projects | Christopher Gifford-Miears | Research group of Dr. Arturo S. Leon | School of Civil and Construction Engineering| Oregon State University ExitProgress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.