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Coastal and Hydraulics Laboratory Fact Sheets
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INTRODUCTION - 2_sed2dhec0005
PROGRAM DESIGN
Theoretical Basis
Convection-diffusion equation
Bed shear stress
Bed shear stress (cont.)
The bed source
'SED2D User Manual' by Unknown - Page 1 of 81
The bed source (cont.)
The bed model
The bed model (cont.)
Boundary Condition Buffering
PROGRAM USE
Input/Output Files for Executing SED2D-WES
Table 1: Standard Input Files
Table 2: Standard Output Files
Description of Card Image Input Data
Description of Card Image Input Data (cont.)
Geometry cards (G1, GC,DM)
Settling velocity (WC cards)
Figure 1. Cohesive bed behavior as a function of shear stress
Bed structure (SB and CL cards)
Effective diffusion (ED, PE and DD cards)
Table 3. Example Dispersion Coefficients
Description of Output
REFERENCES - 2_sed2dhec0030
NOTATION - 2_sed2dhec0031
NOTATION (cont.) - 2_sed2dhec0032
USERS MANUAL / DATA CARDS
TITLE DESCRIPTION - 2_sed2dhec0034
START DATE CONTROL
HOTSTART CONTROL - 2_sed2dhec0036
INPUT FILE CONTROL - 2_sed2dhec0037
OUTPUT FILE CONTROL - 2_sed2dhec0038
MACHINE IDENTIFIER - 2_sed2dhec0039
MACHINE IDENTIFIER (cont.)
BOUNDARY CONDITIONS - 2_sed2dhec0041
CLAY CHARACTERISTICS
CLAY CHARACTERISTIC by ID
CLAY CHARACTERISTIC by ID (cont.)
CLAY DISTRIBUTION BY LAYER
COMMENTS - 2_sed2dhec0046
EFFECTIVE DIFFUSION COEFFICIENT VIA EQ 22
MARSH POROSITY PARAMETERS
EFFECTIVE DIFFUSION COEFFICIENT
ERROR FLAGS
END OF TIME STEP SEPERATION
FLUID DENSITY
FLUID TEMPERATURE
GEOMETRY, NODAL SCALE FACTOR
GEOMETRY, CONTINUITY CHECK LINES - 2_sed2dhec0055
GRID, ELEMENT CONNECTION TABLE - 2_sed2dhec0056
GEOMETRY, NODAL COORDINATE - 2_sed2dhec0057
HYDRAULIC ROUGHNESS (N-Value)
HYDRAULIC RED SHEAR STRESS
INITIAL CONDITIONS - 2_sed2dhec0060
POINT SOURCE CONTROL
EFFECTIVE DIFFUSION COEFFICIENT VIA PECLET NUMBER
PHYSICAL VARIABLES
SAND CHARACTERISTICS
SAND BED THICKNESS
SAND GRAIN SIZE FOR ROUGHNESS
SAND GRAIN SIZE FOR TRANSPORT
SYSTEM INTERNATIONAL UNITS - 2_sed2dhec0068
STOP THE STUDH SIMULATION
TIMING OF BINARY PRINTOUT
TRACE PRINT CONTROL - 2_sed2dhec0071
ELEMENT LIST FOR SPECIAL SUMMARY TRACE PRINT
NODE LIST FOR SPECIAL SUMMARY TRACE PRINT
ELEMENT TYPE LIST FOR SPECIAL SUMMARY TRACE PRINT
CRANK-NICHOLSON THETA
COMPUTATION TIME CONTROL - 2_sed2dhec0076
SETTLING VELOCITY
SETTLING VELOCITY FUNCTION OPTION
PROGRAM EXECUTION - 2_sed2dhec0079
Displaying your results with FastTABS - 2_sed2dhec0080
Displaying your results with SMS
2_sed2dhec