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Title: Bed-load transport model based on fractional size distribution
Authors: Ashiq, M
Doering, JC
Hosoda, T
Keywords: fractional size
critical discharge
IF model
TF model
discharge theory
Roaring River
Issue Date: 6-Jan-2006
Citation: 0315-1468; CAN J CIVIL ENG, JAN 2006, vol. 33, no. 1, p.69 to 80.
Abstract: Two models based on the fractional size distribution approach, used in conjunction with the excess discharge theory, have been developed by using bed-load data collected from the Roaring River (Rocky Mountain National Park, Colorado) during the summer of 1995. The first model is based on the critical discharge value of individual fractional (IF) sizes, IF model (for log-normal and nonlog-normal size distribution modes), while the other is based on critical discharge value for total (combined) sizes, total fractional (TF) sizes model (for log-normal and nonlog-normal size distribution modes). The performance of the log-normal size distribution based models was tested with data from the Roaring River, Rich Creek, and Fourmile Creek (three Colorado streams), whereas the performance of the nonlog-normal size distribution based models was tested using Pitzbach River data. The performance of the models was also tested by comparing their results with the Inpasihardjo fractional size distribution based model. For all tests, the TF model performed better for both the log-normal and nonlog-normal grain size distributions.Key words: fractional size, critical discharge, IF model, TF model, discharge theory, Roaring River.
Appears in Collection(s):Research Publications (UofM Student, Faculty and Staff only access)

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