Engineering Insights from River Dynamics Class
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This document summarizes the contents and structure of a university class on river engineering. It includes: - An introduction to the class format, including introductions, surveys, TAs, and file sharing. - An overview of topics to be taught by the professor, including fluid mechanics, sediment transport, modeling, bed morphology, and river types. - A discussion of student projects where students will teach topics related to the class material.
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Engineering Insights from River Dynamics Class
- 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 Pittsburgh Department 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 students 2. 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 Pittsburgh Department 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 Pittsburgh Department of Civil and Environmental Engineering EPEF group
- 6. Logistics: [1] References for this class Handouts Journal papers Conference papers Other University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
- 7. Contents of the course I will teach University of Pittsburgh Department 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-book Bedload channels Mixed load channels Suspended 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 morphological regime National Geographic Mesoforms: (dunes) Randal Dinehart – Dunes at Garcia respond to flow conditions in Point the outer zone of the Bend, Sacramento River turbulent boundary layer Bar Parsons et al. (2005) Microforms: (current Point lineations, ripples) are governed by the flow Bar structure in the inner zone University of Pittsburgh Department of Civil and Environmental Engineering EPEF group
- 16. An schematic of bedforms From ASCE Sedimentation Manual– Marcelo H Garcia
- 17. An engineering problem From 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 n Lisle 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 Research University of Pittsburgh Department 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 0 Parsons 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
- 28. Deltas
- 29. Types of rivers morphodynamic signature at floodplain scale Meandering Braided Anastomosing Purus 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) D Inner 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=0.00268 2B/H : width to depth ratio Sfp : Slope of the floodplain 4000 years
- 31. Bank erosion consequences For scaling purposes
- 32. Topics for the projects You will teach on the project University of Pittsburgh Department of Civil and Environmental Engineering EPEF group