Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
A Froude number that is applicable to subdivisions of a cross section is developed assuming one-dimensional flow. The subdivision Froude number is shown to be an accurate index of the flow regime in subdivisions of a cross section. An imaginary Froude number in a flood plain indicates that the velocity is increasing with depth and that a one-dimensional flow assumption may be invalid. Mixed flow regimes at a cross section which invalidate assumptions associated with the standard step method can be recognized with the subdivision Froude number. A total of 193 cross section-discharge combinations were tested with a modified version of HEC2; 11 had a mixed flow regime and 36 had at least 1 imaginary Froude number. Keywords: open channel flow. (Author).
Subdivision Froude Number
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
A Froude number that is applicable to subdivisions of a cross section is developed assuming one-dimensional flow. The subdivision Froude number is shown to be an accurate index of the flow regime in subdivisions of a cross section. An imaginary Froude number in a flood plain indicates that the velocity is increasing with depth and that a one-dimensional flow assumption may be invalid. Mixed flow regimes at a cross section which invalidate assumptions associated with the standard step method can be recognized with the subdivision Froude number. A total of 193 cross section-discharge combinations were tested with a modified version of HEC2; 11 had a mixed flow regime and 36 had at least 1 imaginary Froude number. Keywords: open channel flow. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
A Froude number that is applicable to subdivisions of a cross section is developed assuming one-dimensional flow. The subdivision Froude number is shown to be an accurate index of the flow regime in subdivisions of a cross section. An imaginary Froude number in a flood plain indicates that the velocity is increasing with depth and that a one-dimensional flow assumption may be invalid. Mixed flow regimes at a cross section which invalidate assumptions associated with the standard step method can be recognized with the subdivision Froude number. A total of 193 cross section-discharge combinations were tested with a modified version of HEC2; 11 had a mixed flow regime and 36 had at least 1 imaginary Froude number. Keywords: open channel flow. (Author).
Subdivision Froude Number
Author: David H. Schoellhamer
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 18
Book Description
Calculation of Critical Depth and Subdivision Froude Number in HEC2
Author: David H. Schoellhamer
Publisher:
ISBN:
Category :
Languages : en
Pages : 372
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 372
Book Description
Two-dimensional Floodplain Modeling
Author: D. Michael Gee
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 14
Book Description
A two-dimensional horizontal finite element numerical model (RMA-2) was applied to a 15 mile (24 km) river channel-floodplain reach in West Germany. Previous applications of such models have been restricted to much smaller scales. The results indicate that finite element schemes may successfully estimate river stage in large scale floodplain applications. Computed stage hydrographs compared well with observed data using loss coefficients within expected ranges. Two-dimensional flow models have been applied to certain classes of river channel problems. Applications have included detailed analyses of flow patterns near structures such as bridges and floodplains. In all these problems the scale of interest has been small, e.g. reaches of river a few river widths long. Many estuary studies have been done that were of large scale; some of these utilized a hybrid (numerical plus physical) modeling technique. In a review of the application of finite element methods to river channels, Samuels reported that the river channel was resolved separately from the floodplain in only two studies. Missing in previous work is attention to large scale floodplain modeling. The work reported in this paper focuses on the feasibility and accuracy of applying a two-dimensional flow model to a large floodplain. Traditional floodplain studies have used semi-empirical flow routing with steady, one-dimensional computation of water surface elevations to define inundated areas. Keywords: Army Corps of Engines. (kr).
Publisher:
ISBN:
Category : Floodplain management
Languages : en
Pages : 14
Book Description
A two-dimensional horizontal finite element numerical model (RMA-2) was applied to a 15 mile (24 km) river channel-floodplain reach in West Germany. Previous applications of such models have been restricted to much smaller scales. The results indicate that finite element schemes may successfully estimate river stage in large scale floodplain applications. Computed stage hydrographs compared well with observed data using loss coefficients within expected ranges. Two-dimensional flow models have been applied to certain classes of river channel problems. Applications have included detailed analyses of flow patterns near structures such as bridges and floodplains. In all these problems the scale of interest has been small, e.g. reaches of river a few river widths long. Many estuary studies have been done that were of large scale; some of these utilized a hybrid (numerical plus physical) modeling technique. In a review of the application of finite element methods to river channels, Samuels reported that the river channel was resolved separately from the floodplain in only two studies. Missing in previous work is attention to large scale floodplain modeling. The work reported in this paper focuses on the feasibility and accuracy of applying a two-dimensional flow model to a large floodplain. Traditional floodplain studies have used semi-empirical flow routing with steady, one-dimensional computation of water surface elevations to define inundated areas. Keywords: Army Corps of Engines. (kr).
Runoff Simulation Using Radar Rainfall Data
Author: John Charles Peters
Publisher:
ISBN:
Category : Hydrologic models
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Hydrologic models
Languages : en
Pages : 20
Book Description
Handbook of Hydraulic Geometry
Author: Vijay Singh
Publisher: Cambridge University Press
ISBN: 1009222171
Category : Science
Languages : en
Pages : 583
Book Description
An introduction to hydraulic geometry, discussion of different related theories, and their application in river engineering. Handbook of Hydraulic Geometry provides an excellent summary for hydraulic engineers, as well as graduate students and researchers in fluvial geomorphology and environmental engineering.
Publisher: Cambridge University Press
ISBN: 1009222171
Category : Science
Languages : en
Pages : 583
Book Description
An introduction to hydraulic geometry, discussion of different related theories, and their application in river engineering. Handbook of Hydraulic Geometry provides an excellent summary for hydraulic engineers, as well as graduate students and researchers in fluvial geomorphology and environmental engineering.
Selected Water Resources Abstracts
Municipal Stormwater Management
Author: Thomas N. Debo
Publisher: CRC Press
ISBN: 1420032267
Category : Science
Languages : en
Pages : 1174
Book Description
Designed to be a stand alone desktop reference for the Stormwater manager, designer, and planner, the bestselling Municipal Stormwater Management has been expanded and updated. Here is what's new in the second edition: New material on complying with the NPDES program for Phase II and in running a stormwater quality programThe latest information on
Publisher: CRC Press
ISBN: 1420032267
Category : Science
Languages : en
Pages : 1174
Book Description
Designed to be a stand alone desktop reference for the Stormwater manager, designer, and planner, the bestselling Municipal Stormwater Management has been expanded and updated. Here is what's new in the second edition: New material on complying with the NPDES program for Phase II and in running a stormwater quality programThe latest information on
Scientific and Technical Aerospace Reports
Techniques of Water-resources Investigations of the United States Geological Survey: Chapt. B2. Bennet, G.D. Introduction to ground-water hydraulics
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 64
Book Description
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 64
Book Description