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Ingeniería de ríos Jorge Abad 2011

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  • 1. DHN INGENIERIA DE RIOS LOGISTICA Jorge D. Abad Assistant Professor Dept. of Civil and Environmental Engineering University of Pittsburgh http://www.pitt.edu/~jabad/University of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 2. Earth Processes & Environmental Flows (EPEF): The team http://www.pitt.edu/~jabad/ University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 3. Immediate business to take care …1. Introductions: list of students2. Survey (first day)3. TAs (Ronald and Christian)4. Files will be uploaded into a group website for the class  Christian will take of that University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 4. DHN INGENIERIA DE RIOS Introduction to the class, Contents (I will teach) and Projects (You will teach) Jorge D. Abad Assistant Professor Dept. of Civil and Environmental Engineering University of Pittsburgh http://www.pitt.edu/~jabad/University of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 5. Some history Einstein arrives in the United States on October 12, 1937. Photograph from the New York Times,University of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 6. Logistics: [1] References for this class Handouts Journal papers Conference papers OtherUniversity of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 7. Contents of the course I will teachUniversity of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 8. Fluid Mechanics and sediment transport
  • 9. Fluid flow, sediment transport and bed morphology 1D, 2D and 3D modeling Courtesy: Jim Best (Univ. of Illinois) See all movies
  • 10. Types of rivers Gary’s e-bookBedload channelsMixed load channelsSuspended load channels Bed load and suspended load 50g/m/s, 7.0 mm (D50) 50g/m/s, 0.14 mm (D50) Schumm (1981-1985)
  • 11. Sediment transport Schmeeckle and Nelson (2003) University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 12. Bed morphology and sediment transport University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 13. Sediment transport and bed morphology interaction Schmeeckle et al. (1999) University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 14. Bed morphology
  • 15. Bedform dynamics Types of bedforms (Roscoe G. Jackson II, 1975)Macroforms: (point bars)are defined by morphologicalregime National GeographicMesoforms: (dunes) Randal Dinehart – Dunes at Garciarespond to flow conditions in Pointthe outer zone of the Bend, Sacramento Riverturbulent boundary layer Bar Parsons et al. (2005)Microforms: (current Pointlineations, ripples) aregoverned by the flow Barstructure in the inner zone University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 16. An schematic of bedformsFrom ASCE Sedimentation Manual– Marcelo H Garcia
  • 17. An engineering problemFrom ASCE Sedimentation Manual– Marcelo H Garcia
  • 18. Alternate bars in straight channels Naka River, Parker’s e-book B*   D* 3-D view 2B s nLisle et al. (1997) Federici and Colombini (2003)
  • 19. River Meandering Bank Erosion Point Bar EROSION Cut Bank Point Bar DEPOSITION
  • 20. Bed morphology at the channel centerline Time = 4 hr Time = 5 hr Time = 6 hr Abad and Garcia (2009) Water Resources ResearchUniversity of PittsburghDepartment of Civil and Environmental Engineering EPEF group
  • 21. Some examples of bed morphology
  • 22. flow 5 flow m 7 9 300 250 200 m 150 100 50 0Parsons et al. (2005)
  • 23. MBES of Parana - Paraguay junction río Paraguay río Paraná
  • 24. MBES survey of St Clair River, at exit to Lake Huron. July 2008 Detail St Clair River – bar with superimposed dunes (all in fine gravels!)
  • 25. Garcia Bend in Sacramento River, California, USA Randal Dinehart University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
  • 26. Superimposition of ripples over sandbars
  • 27. Planform configuration
  • 28. Deltas
  • 29. Types of rivers  morphodynamic signature at floodplain scale Meandering Braided AnastomosingPurus river, Brazil (Qm~5521 m3/s) Brahmaputra river Mackenzie River, Canada Qm ~ 21,261 m3/s Qm ~ 10,700 m3/s Anabranching Qm>17000 m3/s Solimões–Amazon, Brazil (Qm~55,600 m3/s)
  • 30. 2B Sun et. al. (2001) DInner bank Outer bank 2762 years(a)2B/D=20, Sfp=0.00067(b)2B/D=26, Sfp=0.00067 3263 years(c)2B/D=20, Sfp=0.002682B/H : width to depth ratioSfp : Slope of the floodplain 4000 years
  • 31. Bank erosion consequencesForscalingpurposes
  • 32. Topics for the projects You will teach  on the projectUniversity of PittsburghDepartment of Civil and Environmental Engineering EPEF group

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