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SedWin Transport Equations
SedWin includes 12 commonly used sediment transport equations. These
equations and their applicability for fractional load computations (sediment transport by size fractions) are
given in the following table.
| No. |
Equation |
Total
Bed-Material
Load |
Fractional Bed-Material Load |
| Original |
BMF |
TCF |
| 1 |
Laursen (1958) |
Y |
Y |
|
|
| 2 |
Engelund & Hansen (1967) |
Y |
|
Y |
Y |
| 3 |
Colby (1964) |
Y |
|
|
|
| 4 |
Ackers & White (1973) |
Y |
|
Y |
Y |
| 5a |
Yang (1973) |
Y |
|
Y |
Y |
| 5b |
Yang (1979) |
Y |
|
Y |
Y |
| 5c |
Yang (1984) |
Y |
|
Y |
Y |
| 5d |
Yang (1973 + 1984) |
Y |
|
Y |
Y |
| 6 |
Yang, Molinas, Wu (1996) |
Y |
|
Y |
Y |
| 7 |
Einstein (1950) |
Y |
Y |
|
|
| 8 |
Toffaleti (1968) |
Y |
Y |
|
|
| 9 |
Bagnold (1966) |
Y |
|
Y |
Y |
| 10 |
Wuhan (or Zhang) (1958) |
Y |
|
Y |
Y |
| 11 |
Molinas & Wu (1996) |
Y |
|
Y |
Y |
| 12 |
Karim (1998) |
Y |
Y |
|
|
|