Figure 1. CMS-Flow Model Control : Model Parameters tab in SMS 11.0. All of the CMS-Flow model parameters, settings, and output options are controlled from the CMS-Flow Model Control window (Figure 1). The window has several tabs including the Flow tab in which most of the general settings are set for CMS-Flow. To open the CMS-Flow Model Control window, click on CMS-Flow | Model Control . The first tab will be the Flow tab. There are several sections within the tab including Time Control and Hot Start options.
Grain Size Specification
Card
Arguments
Example
Description
SEDIMENT_SIZE_CLASS_NUMBER
INTEGER
3
Specifies the number of grain size classes.
MULTIPLE_GRAIN_SIZES
INTEGER [REAL, REAL,..., REAL]
3 0.1 0.2 0.3
Specifies the number of grain sizes followed by the grain sizes for each size class in mm.
SEDIMENT_SIZE_CLASS_DIAMETERS
INTEGER [REAL, REAL,..., REAL]
3 0.1 0.2 0.3
Specifies the number of grain sizes followed by the grain sizes for each size class in mm. Same as ULTIPLE_GRAIN_SIZES.
SEDIMENT_SIZE_CLASS_LIMITS
INTEGER [REAL, REAL,..., REAL]
4 0.07 0.15 0.26 0.34
Specifies the size classes limits. The first entry is the number of size class limits which is one greater than the number of size classes.
Fractional Bed Composition
Card
Arguments
Default/Format
Range
Description
BED_COMPOSITION_INPUT
CHARACTER
D50_SIGMA | D16_D50_D84 | D35_D50_D90 | HISTOGRAM | FRACTION_DATASET
Selects the method for specifying the bed material composition.
D50 Dataset and Standard Deviation
Card
Arguments
Default/Format
Range
Description
D50_DATASET
CHARACTER
none
SEDIMENT_STANDARD_DEVIATION
REAL
D16, D50, and D84 Datasets
Card
Arguments
Default/Format
Range
Description
D16_DATASET
CHARACTER
none
D50_DATASET
CHARACTER
none
D84_DATASET
CHARACTER
none
D35, D50, and D90 Datasets
Card
Arguments
Default/Format
Range
Description
D35_DATASET
CHARACTER
none
D50_DATASET
CHARACTER
none
D90_DATASET
CHARACTER
none
Histogram
Card
Arguments
Default/Format
Range
Description
SEDIMENT_SIZE_CLASS_FRACTIONS
INTEGER [REAL, REAL,..., REAL]
Fractional Composition Dataset
Card
Arguments
Default/Format
Range
Description
BED_FRACTIONAL_COMPOSITION_DATASET
CHARACTER CHARACTER
[<grid file>] [<grid name>//"Datasets/<Name>"]
Fractional bed composition file. Necessary when setting BED_COMPOSITION_INPUT to FRACTION_DATASET.
Bed Layer Thickness Table 1. CMS-Flow cards related to the general parameters
Card
Arguments
Default/Format
Range
Description
BED_LAYER_THICKNESS_INPUT
INTEGER [REAL, REAL,..., REAL]
BED_LAYER_THICKNESS_DATASET
CHARACTER CHARACTER
BED_LAYERS_MAX_NUMBER
INTEGER
BED_LAYERS_CONSTANT_THICKNESS
INTEGER [REAL, REAL,..., REAL]
BED_LAYERS_THICKNESS
INTEGER [REAL, REAL,..., REAL]
BED_LAYERS_CONSTANT_THICKNESS
INTEGER [REAL, REAL,..., REAL]
BED_LAYERS_CONSTANT_THICKNESS
INTEGER [REAL, REAL,..., REAL]
Mixing Layer
Card
Arguments
Default/Format
Range
Description
MIXING_LAYER_CONSTANT_THICKNESS
INTEGER [REAL, REAL,..., REAL]
MIXING_LAYER_MIN_THICKNESS
INTEGER [REAL, REAL,..., REAL]
Parameters The general parameters are the water density and temperature. The CMS-Flow cards for the general parameters are described in the table below.
Card
Arguments
Default/Format
Range
Description
HIDING_EXPOSURE_COEFFICIENT
REAL
1025
-
Water density in kg/m^3.
HIDING_EXPOSURE_COEFF
REAL
15
-
Water temperature in degrees Celcius.
Boundary and Initial Conditions
Card
Arguments
Default/Format
Range
Description
SEDIMENT_FLUX_CELLSTRING
REAL
1025
-
Water density in kg/m^3.
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