Page Banner

United States Department of Agriculture

Agricultural Research Service

Title: FLUME EXPERIMENTS FOR DETERMINATING RILL HYDRAULICS, EROSION AND RILL PATTERNS)

Author
item Lei, Tingwu
item Nearing, Mark

Submitted to: International Soil Conservation Organization Conference Proceedings
Publication Type: Abstract only
Publication Acceptance Date: 5/23/1999
Publication Date: N/A
Citation:

Interpretive Summary:

Technical Abstract: A series of flume experiments were conducted to understand shallow water hydraulics, erosion in rills as well as morphological patterns of a rill as affected by rill bed slopes and inflow rates. The soil used was Cecil soil, a sandy loamy soil. Four flow rates, 1, 2, 3 and 4 gallons per minute and 4 slopes, 1%, 3%, 5% and 7% were adopted in the experiments. The velocities, rill widths and sediment concentrations at the outlet were recorded and analyzed with multivariable regression method as functions of slopes, inflow rate and/or their interactive terms. Rill widths changing along the rill with certain periodical patterns were visually observed. A mathematical model is advanced to describe these changing patterns of rill width.

Last Modified: 8/24/2016
Footer Content Back to Top of Page