Fork me on GitHub

Additional sediment transport equation in Sisyphe

Though Sisyphe already includes a great number of sediment transport equations, I added an extra equation that performed quite well in the past. It's the equation of Cheng (2002) which is an exponential formula that does not involve the concept of the critical shear stress. So it is suitable for low as well as for high shear conditions.

The following picture shows a comparison between the formula of Cheng and the formulas of different other authors that represent conditions of high, moderate and low shear stress:

Comparisons with other formulas

The formula itself is quite simple:

Formula of Cheng (2002)

The equation can be found in bedload_cheng.f in my gitorious repository. It can be used by setting the transport equation number to 20.

Have fun!

Literature:

Cheng, Nian-Sheng: Exponential Formula for Bedload Transport, Journal of Hydraulic Engineering, 2002.

ogoe Freitag 14 Januar 2011 at 4:20 pm | | Blog
Stichwörter: , ,

Ein Kommentar

Einer oder mehrere Kommentare sind noch nicht freigeschaltet.

(optionales Feld)
(optionales Feld)

Auf dieser Seite werden die Kommentare moderiert.
Das bedeutet, dass die Kommentare erst dann veröffentlicht werden, wenn sie freigeschaltet wurden.

Persönliche Informationen speichern?
Hinweis: Alle HTML-Tags außer <b> und <i> werden aus Deinem Kommentar entfernt. URLs oder Mailadressen werden automatisch umgewandelt.