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  • Time-averaged flow structure in the central region of a stream confluence
  • Capacité de charge ; Confluence ; Dynamique fluviale ; Ecoulement ; Ecoulement fluvial ; Etats-Unis ; Géométrie hydraulique ; Hydrologie fluviale ; Illinois
  • This paper examines the time-averaged, two-dimensional (downstream and cross-stream) flow sructure within the central region of the confluence hydrodynamic zone (CHZ) at a small stream confluence with an asymmetrical planform. It also examines how
  • flow structure in this part of the CHZ varies with changes in hydrologic conditions and bed morphology. A particular focus is to document the presence or absence of time-averaged, helical motion in the central region of the confluence.
  • Flow structure at an asymmetrical stream confluence
  • Capacité de charge ; Confluence ; Cours d'eau ; Ecoulement fluvial ; Etats-Unis ; Hydrodynamique ; Hydrologie fluviale ; Illinois ; Température de l'eau
  • This research demonstrates how time-averaged downstream and cross-stream velocity fields at an asymmetrical stream confluence vary with changes in the momentum flux ratio and the combined (total) discharge of the confluent tributaries. In particular
  • , the study focuses on patterns of flow separation, flow convergence/divergence, and secondary circulation immediately downstream from the confluence, and the relationship of these patterns to the mixing interface between the combining flows.
  • On secondary circulation, helical motion and Rozovskii-based analysis of time-averaged two-dimensional velocity fields at confluences
  • Confluence ; Cours d'eau ; Ecoulement fluvial ; Géométrie hydraulique ; Hydrologie fluviale ; Modèle numérique ; Méthodologie
  • In this response to Lane et al. (1999) Time averaged flow structure in the central region of a stream confluence : a discussion, Earth Surface Processes and Landforms, 24, 361-367, the AA. show that their method for decomposing the cross-stream
  • , helical motion to the pattern of cross-stream flow at confluences.