Author: D. Michael Gee
Publisher:
ISBN:
Category : Aquatic biology
Languages : en
Pages : 22
Book Description
This paper describes the impacts of potential hydropower retrofits on downstream flow distributions at Lock and Dam No. 8 on the upper Mississippi River. The model used solves the complete Reynolds equations for two-dimensional free-surface flow in the horizontal plane using a finite element solution scheme. RMA-2 has been in continuing use and development at the Hydrologic Engineering Center and elsewhere for the past decade. Although designed primarily for the simulation of hydraulic conditions, RMA-2 may be used in conjunction with related numerical models to simulate sediment transport and water quality. In this study, velocity distributions were evaluated with regard to environmental, navigational and small-boat safety considerations. Aquatic habitat was defined by depth, substrate type and current velocity. Habitat types were quantified by measuring the areas between calculated contours of velocity magnitude (isotachs) for existing and project conditions. The capability for computing and displaying isotachs for the depth-average velocity, velocity one foot from the bottom and near the water surface was developed for this study. The product of this study effort is an application of the RMA-2 model that allows prediction of structural aquatic habitat in hydraulicaly complex locations. Elements of the instream flow group methodology could be incorporated to provide detailed predictions of impacts to habitat quality. Calibration of the numerical model to field measurements of velocity magnitude and direction is also described.
Use of a Two-dimensional Flow Model to Quantify Aquatic Habitat
Author: D. Michael Gee
Publisher:
ISBN:
Category : Aquatic biology
Languages : en
Pages : 22
Book Description
This paper describes the impacts of potential hydropower retrofits on downstream flow distributions at Lock and Dam No. 8 on the upper Mississippi River. The model used solves the complete Reynolds equations for two-dimensional free-surface flow in the horizontal plane using a finite element solution scheme. RMA-2 has been in continuing use and development at the Hydrologic Engineering Center and elsewhere for the past decade. Although designed primarily for the simulation of hydraulic conditions, RMA-2 may be used in conjunction with related numerical models to simulate sediment transport and water quality. In this study, velocity distributions were evaluated with regard to environmental, navigational and small-boat safety considerations. Aquatic habitat was defined by depth, substrate type and current velocity. Habitat types were quantified by measuring the areas between calculated contours of velocity magnitude (isotachs) for existing and project conditions. The capability for computing and displaying isotachs for the depth-average velocity, velocity one foot from the bottom and near the water surface was developed for this study. The product of this study effort is an application of the RMA-2 model that allows prediction of structural aquatic habitat in hydraulicaly complex locations. Elements of the instream flow group methodology could be incorporated to provide detailed predictions of impacts to habitat quality. Calibration of the numerical model to field measurements of velocity magnitude and direction is also described.
Publisher:
ISBN:
Category : Aquatic biology
Languages : en
Pages : 22
Book Description
This paper describes the impacts of potential hydropower retrofits on downstream flow distributions at Lock and Dam No. 8 on the upper Mississippi River. The model used solves the complete Reynolds equations for two-dimensional free-surface flow in the horizontal plane using a finite element solution scheme. RMA-2 has been in continuing use and development at the Hydrologic Engineering Center and elsewhere for the past decade. Although designed primarily for the simulation of hydraulic conditions, RMA-2 may be used in conjunction with related numerical models to simulate sediment transport and water quality. In this study, velocity distributions were evaluated with regard to environmental, navigational and small-boat safety considerations. Aquatic habitat was defined by depth, substrate type and current velocity. Habitat types were quantified by measuring the areas between calculated contours of velocity magnitude (isotachs) for existing and project conditions. The capability for computing and displaying isotachs for the depth-average velocity, velocity one foot from the bottom and near the water surface was developed for this study. The product of this study effort is an application of the RMA-2 model that allows prediction of structural aquatic habitat in hydraulicaly complex locations. Elements of the instream flow group methodology could be incorporated to provide detailed predictions of impacts to habitat quality. Calibration of the numerical model to field measurements of velocity magnitude and direction is also described.
Role of Small Computers in Two-dimensional Flow Modeling
Author: D. Michael Gee
Publisher:
ISBN:
Category : Hydraulics
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Hydraulics
Languages : en
Pages : 18
Book Description
Scientific and Technical Aerospace Reports
Multi-purpose, Multi-reservoir Simulation on a Pc
Author: Bill Eichert
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 30
Book Description
The methodology and difficulties in converting a large, general purpose, mainframe, batch oriented computer program (for reservoir simulation) to work effectively in the PC environment are described in this paper. A brief overview of the present capabilities of the general purpose reservoir simulation program (HEC-5), that works on mainframe and MS DOS compatible computers, is also presented. Keywords: Simulation, Personal computer, Reservior system, Flood control, Hydropower, Water supply, Computer programs, Multi-purpose, Multi-reservoir, FORTRAN. (jes).
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 30
Book Description
The methodology and difficulties in converting a large, general purpose, mainframe, batch oriented computer program (for reservoir simulation) to work effectively in the PC environment are described in this paper. A brief overview of the present capabilities of the general purpose reservoir simulation program (HEC-5), that works on mainframe and MS DOS compatible computers, is also presented. Keywords: Simulation, Personal computer, Reservior system, Flood control, Hydropower, Water supply, Computer programs, Multi-purpose, Multi-reservoir, FORTRAN. (jes).
HEC Models for Urban Hydrologic Analysis
Author:
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 24
Book Description
HEC River Analysis System (HEC-RAS)
Author: Gary W. Brunner
Publisher:
ISBN:
Category : HEC-RAS (Computer program)
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : HEC-RAS (Computer program)
Languages : en
Pages : 16
Book Description
The HEC Hydrologic Modeling System
Author: John Charles Peters
Publisher:
ISBN:
Category : HEC-HMS (Computer program)
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : HEC-HMS (Computer program)
Languages : en
Pages : 16
Book Description
Real-time Snow Simulation Model for the Monongahela River Basin
Author: Daniel H. Hoggan
Publisher:
ISBN:
Category : Monongahela River Watershed (W. Va. and Pa.)
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Monongahela River Watershed (W. Va. and Pa.)
Languages : en
Pages : 16
Book Description
The HEC NexGen Software Development Project
Author: Darryl W. Davis
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 18
Book Description
Risk-based Analysis for Corps Flood Project Studies
Author: Earl E. Eiker
Publisher:
ISBN:
Category : Environmental risk assessment
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Environmental risk assessment
Languages : en
Pages : 16
Book Description