scholarly journals Application of an Optimization/Simulation Model for the Real-Time Flood Operation of River-Reservoir Systems with One- and Two-Dimensional Unsteady Flow Modeling

Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 87
Author(s):  
Hasan Albo-Salih ◽  
Larry W. Mays ◽  
Daniel Che
Keyword(s):  
Unsteady Flow ◽  
Real Time ◽  
River System ◽  
Army Corps ◽  
Two Dimensional ◽  
Flow Modeling ◽  
Army Corps Of Engineers ◽  
Modeling Approach ◽  
River Reservoir ◽  
Optimization Simulation

An application is presented of a new methodology for the real-time operations of river-reservoir systems. The methodology is based upon an optimization/simulation modeling approach that interfaces optimization with a one and/or two-dimensional unsteady flow simulation model (U.S. Army Corps of Engineers HEC-RAS). The approach also includes a model for short-term rainfall forecasting, and the U.S. Army Corps of Engineers HEC-HMS model for rainfall-runoff modeling. Both short-term forecasted rainfall in addition to gaged streamflow data and/or NEXRAD (Next-Generation Radar) can be implemented in the modeling approach. The optimization solution methodology is based upon a genetic algorithm implemented through MATLAB. The application is based upon the May 2010 flood event on the Cumberland River system in the USA, during which releases from Old Hickory dam caused major flooding in the downstream area of Nashville, TN, USA, and allowed the dam to be placed in an emergency operational situation. One of the major features of the modeling effort and the application presented was to investigate the use of different unsteady flow modeling approaches available in the HEC-RAS, including one-dimensional (1D), two-dimensional (2D), and the combined (1D/2D) approach. One of the major results of the application was to investigate the use the different unsteady flow approaches in the modeling approach. The 2D unsteady flow modeling, based upon the diffusion wave approach, was found to be superior for the application to the Cumberland River system. The model application successfully determined real-time operations that would have maintained the flood water surface elevations at the downstream control point in Nashville below the 100-year return period river water surface and maintaining the gate openings at the Old Hickory Dam from reaching an emergency operational situation, which could have caused major losses at the dam.

scholarly journals Application of an Optimization/Simulation Model for the Real-time Flood Operation of River-Reservoir Systems with One and Two-Dimensional Unsteady Flow Modeling

2021 ◽  
Author(s):  
Hasan Albo Salih ◽  
Larry W. Mays ◽  
Daniel Che
Keyword(s):  
Unsteady Flow ◽  
River System ◽  
Army Corps ◽  
Two Dimensional ◽  
Flow Modeling ◽  
Army Corps Of Engineers ◽  
Modeling Approach ◽  
River Reservoir ◽  
Reservoir Systems ◽  
Optimization Simulation

Abstract An application is presented of a new methodology for the real-time operation of flood control reservoir gate control operations of river-reservoir systems to minimize flooding. The methodology is based upon an optimization/simulation modeling approach that interfaces optimization with a one and/or two-dimensional unsteady flow simulation model (U.S. Army Corps of Engineers HEC-RAS). The approach also includes a model for short-term rainfall forecasting and the U.S. Army Corps of Engineers HEC-HMS model for rainfall-runoff modeling. Both short term forecasted rainfall in addition to gaged streamflow data and/or NEXRAD (Next-Generation Radar) can be implemented in the modeling approach. The optimization solution methodology is based upon a genetic algorithm implemented through MATLAB. The application is based upon the May 2010 flood event on the Cumberland River system in the USA, during which releases from Old Hickory dam caused major flooding downstream area of Nashville, Tennessee area. One of the major features of the modeling effort and the application presented was to investigate the use of different unsteady flow modeling approaches available in the HEC-RAS) including one-dimensional (1D), two-dimensional (2D), and the combined (1D/2D) approach. One of the major results of the application was to investigate the use the different unsteady flow approaches in the modeling approach. The 2D unsteady flow modeling is based upon the diffusion wave approach was found to be superior for the application to the Cumberland River system

scholarly journals Examples on Simulation Model

2021 ◽  
Vol 9 (12) ◽  
pp. 1976-1980
Author(s):  
Pooja B
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Flood Control ◽  
Simulation Software ◽  
Rainfall Forecasting ◽  
Flow Models ◽  
Runoff Modeling ◽  
River Reservoir ◽  
Optimization Simulation ◽  
Gate Control

Abstract: A new methodology was developed Further real-time determination gate control operations of a river-reservoir system to minimize flooding conditions. The methodology is based upon an optimization-simulation model approach interfacing the genetic algorithm within simulation software for short-term rainfall forecasting, rainfall–runoff modeling (HEC-HMS), and a one-dimensional (1D), two-dimensional (2D), and combined 1D and 2D combined unsteady flow models (HEC-RAS). Both realtime rainfall data from next-generation radar (NEXRAD) and gaging stations, and forecasted rainfall are needed to make gate control decisions (reservoir releases) in real-time so that at timet, rainfall is known and rainfall over the future timeperiod(∆t)totimet+ ∆t can be forecasted. This new model can be used to manage reservoir release schedules (optimal gate operations) before, during, and after a rainfall event. Through real-time observations and optimal gate controls, downstream water surface elevations are controlled to avoid exceedance of threshold flood levels at target locations throughout a riverreservoir system to minimize the damage. In an example application, an actual river reach with a hypothetical upstream flood control reservoir is modeled in real-time to test the optimization-simulation portion of the overall model. Keywords: Simulation – Random numbers- Steps for simulation – Problems.

Computer Simulation of the Hydrodynamic and Salinity Behavior of Weeks Bay, Alabama, at Equatorial Tide Conditions

1991 ◽  
Vol 24 (6) ◽  
pp. 165-169 ◽  
Author(s):  
Ashok Thollapalli ◽  
Gary C. April ◽  
Donald C. Raney ◽  
William W. Schroeder ◽  
Barry C. McCormick ◽  
...  
Keyword(s):  
Army Corps ◽  
Data Sets ◽  
Two Dimensional ◽  
Army Corps Of Engineers ◽  
Weeks Bay ◽  
Western Side ◽  
Water Elevations ◽  
Averaged Model ◽  
Good Agreement

Whereas the long term goal of the work described focuses on issues related to estuaries in general, specific attention in this paper focuses on one – Weeks Bay, Alabama. This estuary is one of seventeen estuarine research reserves established as “natural field laboratories” for long-term scientific and educational programs (See Figure 1). Initially, Weeks Bay will be assumed to be a well mixed estuary such that two-dimensional (depth averaged) modeling can be used. The Waterways Experiment Station Implicit Flooding Model (WIFM), developed by the U.S. Army Corps of Engineers, Vicksburg, Mississippi is used. Complete data sets at equatorial tidal conditions were chosen from the field data available. Good agreement of model results with field measured water elevations was noted. These results are typical of the kind of agreement that is expected from two-dimensional depth averaged model simulations. As anticipated, there seems to be little or no movement of salt along the western shoreline when the Bon Secour Bay salinities are low. This indicates selective flow of Fish River water down the western side of the bay with a corresponding preference for Bon Secour Bay water to flow along the eastern shore.

scholarly journals Testing of an Optimization-Simulation Model for Real-Time Flood Operation of River-Reservoir Systems

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1207
Author(s):  
Hasan Albo-Salih ◽  
Larry Mays
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Flood Control ◽  
Simulation Software ◽  
Rainfall Forecasting ◽  
Reservoir System ◽  
River Reservoir ◽  
Future Time Period ◽  
Optimization Simulation ◽  
Gate Control

A new methodology was developed for the real-time determination gate control operations of a river-reservoir system to minimize flooding conditions. The methodology is based upon an optimization-simulation model approach interfacing the genetic algorithm within MATLAB with simulation software for short-term rainfall forecasting, rainfall–runoff modeling (HEC-HMS), and a one-dimensional (1D), two-dimensional (2D), and combined 1D and 2D combined unsteady flow models (HEC-RAS). Both real-time rainfall data from next-generation radar (NEXRAD) and gaging stations, and forecasted rainfall are needed to make gate control decisions (reservoir releases) in real-time so that at time t, rainfall is known and rainfall over the future time-period (Δt) to time t + Δt can be forecasted. This new model can be used to manage reservoir release schedules (optimal gate operations) before, during, and after a rainfall event. Through real-time observations and optimal gate controls, downstream water surface elevations are controlled to avoid exceedance of threshold flood levels at target locations throughout a river-reservoir system to minimize the damage. In an example application, an actual river reach with a hypothetical upstream flood control reservoir is modeled in real-time to test the optimization-simulation portion of the overall model.

Water level management for enhanced fish and wildlife habitat production in Upper Mississippi River navigation pools : an Engineering with Nature® review of practice

2021 ◽  
Author(s):  
Charles Theiling ◽  
Benjamin McGuire ◽  
Gretchen Benjamin ◽  
Dave Busse ◽  
Jon Hendrickson ◽  
...  
Keyword(s):  
Wildlife Management ◽  
Mississippi River ◽  
Habitat Management ◽  
River System ◽  
Lessons Learned ◽  
Wildlife Habitat ◽  
Army Corps ◽  
Upper Mississippi River ◽  
Army Corps Of Engineers ◽  
Us Army

There is a long history of fish and wildlife management associated with Upper Mississippi River navigation dams owned and operated by the US Army Corps of Engineers (USACE). Many operational changes have been made to improve aquatic habitat, with recent emphasis on pool-scale drawdowns to enhance wetland benefits without affecting navigation or other uses. This special report describes projects successfully incorporating Engineering With Nature® principles in a review of the physical setting and historical fish and wildlife habitat management efforts using Upper Mississippi River System navigation dams. We reviewed 80 years of adaptation and lessons learned about how to integrate navigation operations and wildlife management. Several experiments have revealed the capacity to produce thousands of hectares of emergent and submersed aquatic plants, restoring much-needed riparian habitat for a variety of aquatic, wetland, and avian species.

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