Experimental Study on Interaction between the Sorting of Sand Mixtures and the Development of Sand Waves

Miwa, Hiroshi; Daido, Atsuyuki

doi:10.2208/prohe.35.403

Cited by 2 publications

(2 citation statements)

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“…The wave height increased until 330 min for Case 1 and 300 min for Case 2, after which there was little change. According to Suzuki and Michiue (1991), and Miwa and Daido (1991), mixed sand has lower sand waves height than uniform sand. Because this experiment was made using mixed sand, there is the possibility that wave height development was hindered.…”

Section: Sand Waves Shapesmentioning

confidence: 93%

“…Yalin and Karahan (1979) and Kikkawa and Ishikawa (2011) estimated form drag by using riverbed (sand waves) form. Miwa and Daido (1991) proposed a hydraulic resistance estimation formula that incorporates a formula for calculating the parameters of sand wave form into the method proposed by Yalin. Gilbert and Guy, Simons and Richardson made experiments on small scale sand waves. Their experiments confirmed that differences in bed slope, water depth and grain size produce various riverbed configurations, e.g., dunes, transition beds, flat beds and antidunes (Task Committee, 1973).…”

Section: Introductionmentioning

confidence: 99%

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Study on hydraulic resistance of erodible bed at the Chiyoda experimental flume

et al. 2014

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The authors made erodible bed experiments under steady flow condition at the Chiyoda Experimental Flume, a large-scale facility constructed on the floodplain of the Tokachi River, and observed sand waves on the bed of the flume. In this study, the characteristics of the sand waves are examined along the longitudinal survey lines and confirmed to be dunes. Next, the authors estimated Manning's roughness coefficients from the observed hydraulic values and assumed that the rise of the coefficients attributed to the sand wave development. Finally, vertical flow distribution on the sand waves are examined, and observed velocity distribution on the crest of waves found to be explained by the logarithmic distribution theory.

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Section: Sand Waves Shapesmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%