NAME
dinmod - FESWMS-2DH utility program to prepare data input
ABSTRACT
DINMOD is part of a modular set of computer programs (FESWMS-2DH)
that simulates two-dimensional, depth-integrated, surface-water
flows. FESWMS-2DH consists of an input data preparation program
(DINMOD), flow model (FLOMOD), simulation output analysis program
(ANOMOD), and graphics conversion program (HPPLOT). The programs
have been developed to analyze flow at bridge crossings where
complicated hydraulic conditions exist, although they may be applied
to many types of steady or unsteady flow problems. Shallow rivers,
flood plains, estuaries, and coastal seas are examples of surface-
water bodies in which flows may be essentially two-dimensional in
the horizontal plane.
DINMOD is an input data preprocessor for the FESWMS-2DH modeling
system to assist a user in developing a finite element network that
is free from errors. It can be used to develop a new finite element
network or to refine, update, or modify an existing network.
HISTORY
Version 1.10.DG1 06/03/92 - Converted to run on Data General AViiON.
Version 1.10 01/18/89 - FHWA official version; general code and bug
fixes.
Version 1.01 01/06/88 - Added option to plot contour line values.
Version 1.00 01/01/88 - Initial version developed for the Federal
Highway Administration, Offices of Research, Development, and
Technology, by the U.S. Geological Survey.
DATA REQUIREMENTS
DINMOD begins by reading job control data from data records. An
existing network data file is read next if requested. Remaining
data records then are read. Any network data read from data records
will override data previously read from an existing network data
file.
OUTPUT OPTIONS
DINMOD functions include:
o Reads all data needed to define a finite element
network. Input data are read from data records and,
optionally, from a previously generated network data
file.
o Checks all input data for compatibility with array
dimensions; and, optionally, checks for strict
geometric consistency and completeness, which is
useful when a new network is being developed or when
extensive revisions are being made to an existing
network.
o Interpolates node point coordinates along straight-line
segments of a finite element network.
o Generates automatically all or part of a finite element
network including element connectivity lists and node
point locations.
o Subdivides all elements in a network into four similar
elements. This feature allows rapid refinement of an
entire finite element network.
o Determines an element assembly sequence that will
result in an efficient frontal solution of a system of
finite element equations.
o Writes processed network data to a file that can be
read by other FESWMS-2DH programs.
o Creates graphic output files in HPGL format that can be
processed to display finite element network and
ground-surface elevation contour plots.
SYSTEM REQUIREMENTS
DINMOD is written in Fortran 77 with the following extensions: use
of variable names longer than 6 characters, mixed character and non-
character variables in common blocks, use of explicit length
declarations (INTEGER*2, INTEGER*4, REAL*4), include files, and
reference to compiler-dependent system date and time routines.
Graphics are coded using Computer Associates' DISSPLA library
references. Generally, the program is easily installed on most
computer systems that have access to the DISSPLA graphics library or
if the graphics are disabled by the user modifying the code. The
code has been used on UNIX-based computers.
DOCUMENTATION
Froehlich, D.C., 1989, HW031.D - Finite Element Surface-Water
Modeling System: Two-Dimensional Flow in a Horizontal
Plane--Users Manual: Federal Highway Administration Report FHWA-
RD-88-177, 285 p.
REFERENCES
Lee, J.K., and Froehlich, D.C., 1989, HW031.X, research report:
Federal Highway Administration Report.
CONTACTS
Operation:
U.S. Geological Survey
Office of Surface Water
Janice M. Fulford
Building 2101
Stennis Space Center, MS 39529
jfulford@usgs.gov
Distribution:
U.S. Geological Survey
Hydrologic Analysis Software Support Program
437 National Center
Reston, VA 20192
h2osoft@usgs.gov
Official versions of U.S. Geological Survey water-resources analysis
software are available for electronic retrieval via the World Wide
Web (WWW) at:
http://water.usgs.gov/software/
and via anonymous File Transfer Protocol (FTP) from:
water.usgs.gov (path: /pub/software).
The WWW page and anonymous FTP directory from which the FESWMS
software can be retrieved are, respectively:
http://water.usgs.gov/software/feswms.html
--and--
/pub/software/surface_water/feswms
The program and documentation are also available with limited
support for a nominal fee from:
The Center for Microcomputers in Transportation (McTrans)
University of Florida
512 Weil Hall
Gainesville, FL 32611
(352) 392-0378
SEE ALSO
anomod(1) - FESWMS-2DH utility program to analyze simulation
output
flomod(1) - FESWMS-2DH simulation program
hpplot(1) - FESWMS-2DH utility program to plot HPGL graphics
file in an X window