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Curvilinear grids for sinuous river channelsIn order to effectively analyze the flow in sinuous river channels, a curvilinear grid system was developed for use in the appropriate hydrodynamic code. The CENTERLINE program was designed to generate a two dimensional grid for this purpose. The Cartesian coordinates of a series of points along the boundaries of the sinuous channel represent the primary input to CENTERLINE. The program calculates the location of the river centerline, the distance downstream along the centerline, and both radius of curvature and channel width as a function of such distance downstream. These parameters form the basis for the generation of the curvilinear grid. Based on input values for longitudinal and lateral grid spacing, the corresponding grid system is generated and a file is created containing the appropriate parameters for use in the associated explicit finite difference hydrodynamic programs. Because of the option for a nonuniform grid, grid spacing can be concentrated in areas containing the largest flow gradients.
Document ID
19810006210
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Tatom, F. B.
(Engineering Analysis, Inc. Huntsville, AL, United States)
Waldrop, W. R.
(Tennessee Valley Authority Huntsville, AL, United States)
Smith, S. R.
(Engineering Analysis, Inc.)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Langley Research Center Numerical Grid Generation Tech.
Subject Category
Numerical Analysis
Accession Number
81N14724
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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