2014
DOI: 10.1016/j.advwatres.2014.05.002
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Numerical calculation for bed variation in compound-meandering channel using depth integrated model without assumption of shallow water flow

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Cited by 32 publications
(11 citation statements)
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“…The BVC Method, the Bottom Velocity Computational Method [1], which was able to estimate vertical velocity distributions of flows based on the depth integrated model were employed for simulating flows and bed variations. The vertical velocity distributions in the numerical model were calculated by using depth averaged horizontal vorticity and difference between water surface velocities and bottom velocities.…”
Section: Calculation Methods and Conditionsmentioning
confidence: 99%
“…The BVC Method, the Bottom Velocity Computational Method [1], which was able to estimate vertical velocity distributions of flows based on the depth integrated model were employed for simulating flows and bed variations. The vertical velocity distributions in the numerical model were calculated by using depth averaged horizontal vorticity and difference between water surface velocities and bottom velocities.…”
Section: Calculation Methods and Conditionsmentioning
confidence: 99%
“…The hydrostatic assumption has been employed by many researchers to produce acceptable results [12,19]. The vertical acceleration and vertical velocity are significant and cannot be ignored near the inner and outer banks [32]. However, the hydrostatic pressure assumption causes large errors near lateral walls for simulation, which requires further discussion.…”
Section: Governing Equationsmentioning
confidence: 99%
“…This means it simply presumes linear velocity profiles. To get more 3D information, Uchida and Fukuoka [32] assumed a cubic distribution for velocity profile and non-hydrodynamic pressure distribution, which is close to the actual situation.…”
Section: Introductionmentioning
confidence: 99%
“…For water flows over immobile gravel beds, several researchers have succeeded in simulating nonequilibrium flows near the bed, alleviating the limitation of the previous wall law for an impermeable boundary (e.g., Olsen and Stokseth 1995;Lane et al 2004;Carney et al 2006;Nikora 2008;Rameshwaran et al 2011;Dey and Das 2012;Uchida et al 2016). Sediment transport models for uniform bed materials have been developed by employing numerical simulation models for three-dimensional (3D) structures and bottom velocity acting on sediment (e.g., Wu 2008;Khosronejad et al 2012;Uchida and Fukuoka 2014). Eulerian two-phase models have also been developed for the interaction between sediment motion and water flow (e.g., Hsu et al 2004;Kranenburg et al 2014;Uchida and Fukuoka 2019); however, there have been few attempts to develop a model for sediment mixtures (e.g., Muhammad 2008;Zhang et al 2015) because of the complicated interactions between sediment mixtures and fluid flows.…”
Section: Introductionmentioning
confidence: 99%