FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2139969097> ?p ?o ?g. }

• W2139969097 endingPage "183" @default.
• W2139969097 startingPage "153" @default.
• W2139969097 abstract "The derivation of a new vectorial bedload formulation for the transport of coarse sediment by fluid flow is presented in the first part of the paper. This relation has been developed for slopes up to the angle of repose both in the streamwise and transverse directions. The pressure distribution is assumed to be hydrostatic. The bed shear stress for the onset of particle motion and mean particle velocity are obtained from the mean force balance on a particle. A new generalized Bagnold hypothesis is introduced to calculate the sediment content of the bedload layer. The new formulation possesses two innovative features. It is fully nonlinear and vectorial in nature, in addition, it behaves smoothly up to the angle of repose. A mathematical model of the time evolution of straight river channels is presented in the second half of the paper. This study focuses on the evolution process due to bank erosion in the presence of bedload only. The bed and bank material is taken to be coarse, non-cohesive and uniform in size. The sediment continuity and the fluid momentum conservation equations describe the time evolution of the bed topography and flow field. These equations are coupled through the fluid shear stress acting on the bed. This bed shear stress distribution is predicted with the aid of a simple algebraic turbulent closure model. As regards the computation of the sediment flux, the new fully nonlinear vectorial formulation is found to perform well and renders the evolution model fully mechanistic. The formation of an erosional front in the time development of straight river channels has been so far obscured in physical experiments. Herein, with the help of the new bedload formulation, the existence and migration speed of the front of erosion are inferred from the analysis of the sediment continuity equation. The model successfully describes the time relaxation of an initially trapezoidal channel toward an equilibrium cross-sectional shape, as evidenced by comparison with experimental data. This equilibrium is characterized by a constant width, vanishing sediment transport in the transverse direction, and a small but non-vanishing streamwise transport rate of bed sediment." @default.
• W2139969097 created "2016-06-24" @default.
• W2139969097 creator A5053654357 @default.
• W2139969097 creator A5088484144 @default.
• W2139969097 date "1994-05-25" @default.
• W2139969097 modified "2023-10-18" @default.
• W2139969097 title "A new vectorial bedload formulation and its application to the time evolution of straight river channels" @default.
• W2139969097 cites W1642562081 @default.
• W2139969097 cites W41152446 @default.
• W2139969097 cites W4236861647 @default.
• W2139969097 doi "https://doi.org/10.1017/s002211209400114x" @default.
• W2139969097 hasPublicationYear "1994" @default.
• W2139969097 type Work @default.
• W2139969097 sameAs 2139969097 @default.
• W2139969097 citedByCount "197" @default.
• W2139969097 countsByYear W21399690972012 @default.
• W2139969097 countsByYear W21399690972013 @default.
• W2139969097 countsByYear W21399690972014 @default.
• W2139969097 countsByYear W21399690972015 @default.
• W2139969097 countsByYear W21399690972016 @default.
• W2139969097 countsByYear W21399690972017 @default.
• W2139969097 countsByYear W21399690972018 @default.
• W2139969097 countsByYear W21399690972019 @default.
• W2139969097 countsByYear W21399690972020 @default.
• W2139969097 countsByYear W21399690972021 @default.
• W2139969097 countsByYear W21399690972022 @default.
• W2139969097 countsByYear W21399690972023 @default.
• W2139969097 crossrefType "journal-article" @default.
• W2139969097 hasAuthorship W2139969097A5053654357 @default.
• W2139969097 hasAuthorship W2139969097A5088484144 @default.
• W2139969097 hasConcept C114793014 @default.
• W2139969097 hasConcept C121332964 @default.
• W2139969097 hasConcept C127313418 @default.
• W2139969097 hasConcept C158622935 @default.
• W2139969097 hasConcept C187320778 @default.
• W2139969097 hasConcept C196558001 @default.
• W2139969097 hasConcept C20470049 @default.
• W2139969097 hasConcept C21141959 @default.
• W2139969097 hasConcept C2816523 @default.
• W2139969097 hasConcept C38349280 @default.
• W2139969097 hasConcept C57879066 @default.
• W2139969097 hasConcept C62520636 @default.
• W2139969097 hasConcept C65589250 @default.
• W2139969097 hasConceptScore W2139969097C114793014 @default.
• W2139969097 hasConceptScore W2139969097C121332964 @default.
• W2139969097 hasConceptScore W2139969097C127313418 @default.
• W2139969097 hasConceptScore W2139969097C158622935 @default.
• W2139969097 hasConceptScore W2139969097C187320778 @default.
• W2139969097 hasConceptScore W2139969097C196558001 @default.
• W2139969097 hasConceptScore W2139969097C20470049 @default.
• W2139969097 hasConceptScore W2139969097C21141959 @default.
• W2139969097 hasConceptScore W2139969097C2816523 @default.
• W2139969097 hasConceptScore W2139969097C38349280 @default.
• W2139969097 hasConceptScore W2139969097C57879066 @default.
• W2139969097 hasConceptScore W2139969097C62520636 @default.
• W2139969097 hasConceptScore W2139969097C65589250 @default.
• W2139969097 hasLocation W21399690971 @default.
• W2139969097 hasOpenAccess W2139969097 @default.
• W2139969097 hasPrimaryLocation W21399690971 @default.
• W2139969097 hasRelatedWork W2058378881 @default.
• W2139969097 hasRelatedWork W2078672932 @default.
• W2139969097 hasRelatedWork W2182563358 @default.
• W2139969097 hasRelatedWork W2184388205 @default.
• W2139969097 hasRelatedWork W2738343222 @default.
• W2139969097 hasRelatedWork W2902811837 @default.
• W2139969097 hasRelatedWork W3015273092 @default.
• W2139969097 hasRelatedWork W4243497709 @default.
• W2139969097 hasRelatedWork W4249283660 @default.
• W2139969097 hasRelatedWork W4382990315 @default.
• W2139969097 hasVolume "267" @default.
• W2139969097 isParatext "false" @default.
• W2139969097 isRetracted "false" @default.
• W2139969097 magId "2139969097" @default.
• W2139969097 workType "article" @default.