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TABS-MDS
CC CARD
CLAY CONSTANTS
CC CARD
Field
Variable
Value
Description
0,C1-2
IC1
FC
Card group identifier
1
TAUDC
+,0
Critical shear stress for deposition. This is the shear stress below
which deposition will occur (lbf/ft2 or N/m2).
Default =
2
TEC1
+
Nominal critical shear stress for erosion.
(lbf/ft2 or N/m2)
Default =
3
TEC2
+,0
Critical shear stress exponent
Default =
4
PRC1
+
Erosion rate constant coefficient
Default =
5
PRC2
+
Erosion rate constant exponent
Default =
6
ESSE
+
Excess shear stress exponent (the recommended range for this value is
between 1 and 3)
7
CS1M
+
Maximum allowable silt fraction
NOTE: The critical shear stress for erosion (TAUEC) is the shear stress
above which erosion will occur. It is a function of the sediment
concentration (CS) of a particular layer. The expression for TAUEC
as a function of CS is as follows:
TAUEC = TEC1 CSTEC2
The erosion rate constant (PERC) is a function of TAUEC. The
expression for PERC as a function of TAUEC is as follows:
PERC = TAUEC 200 EXP(-PRC1 TAUECPRC2)
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