Fluvial Processes and Stream Morphology

Garant předmětu:

Václav Matoušek, Petr Sklenář

Přednášející:

Václav Matoušek, Petr Sklenář

Cvičící:

Václav Matoušek, Petr Sklenář

Předmět zajišťuje:

katedra hydrauliky a hydrologie

Anotace:

Properties of rivers and fluvial processes. River variability and complexity, geomorphic assessment of rivers; controls of river morphology and behaviour. Stream sediment and modes of its transport. Channel resistance. Equilibrium transport of bed load, suspended load and total load. Transport of sediment out of equilibrium. Mathematical modelling of flow with transport of sediment over mobile bed. Physical modelling of rivers/streams with mobile bed. Mountain stream morphology. Stability of stream thread. Geomorphic analysis of river channel changes. Modelling approaches to the ecology of fluvial system and river chemistry. River pollution and mixing zones.

Požadavky:

No prerequisites.

Osnova přednášek:

1. Properties of rivers and fluvial processes. Systems and scales in regional geomorphology, classification of channel types and river patterns.

2. River variability and complexity, geomorphic assessment of rivers; controls of river morphology and behaviour; fixed and variable local controls.

3. Stream sediment and modes of its transport - classification of sediment, sediment sampling, incipient transport, bed forms, transport regimes and their thresholds

4. Channel resistance - effects of boundary roughness, vegetation, bed forms, sediment transport. Internal structure of flow in mobile-bed channels.

5. Equilibrium transport of bed load, suspended load and total load - hydrodynamic, friction, and transport formulae.

6. Transport of sediment out of equilibrium - short-term morphodynamic responses of a mobile-bed river.

7. Transport of sediment out of equilibrium - long-term morphodynamic responses of a mobile-bed river.

8. Principles of mathematical modelling of flow with transport of sediment over mobile bed. 1D and 2D examples of depth averaged model solutions.

9. Physical models with mobile bed. Dimensional analysis, model similitude principles.

10. Mountain stream morphology - intense bed load and debris flow, kinetic theory based modelling.

11. Stability of stream thread.

12. Geomorphic analysis of river channel changes due to scouring and bank failure (bank retreat), effects of vegetation, LWD and river ice on channel morphology.

13. Modelling approaches to the ecology of fluvial system and river chemistry. River pollution and mixing zones.

Osnova cvičení:

1. Properties of rivers and fluvial processes. Classification of channel types and river patterns.

2. Geomorphic assessment of rivers.

3. Stream sediment and modes of its transport.

4. Channel resistance. Internal structure of flow in mobile-bed channels.

5. Equilibrium transport of bed load, suspended load and total load.

6. Transport of sediment out of equilibrium - short-term morphodynamic responses.

7. Transport of sediment out of equilibrium - long-term morphodynamic responses.

8. Examples of mathematical modelling of flow with transport of sediment over mobile bed.

9. Examples of physical modelling - dimensional analysis, model similitude.

10. Examples of kinetic theory based modelling of intense transport of sediment.

11. Stability of stream thread.

12. Examples of geomorphic analysis of river channel changes.

13. Modelling approaches to the ecology of fluvial system.

Cíle studia:

To gain knowledge on geomorphic processes and their mechanisms in natural rivers and streams, to gain competences to find engineering solutions for river stability problems.

Studijní materiály:

Essential literature:

DEY, S.: Fluvial Hydrodynamics. Hydrodynamic and Sediment Transport Phenomena. Springer. 2014. ISBN 978-3-642-19061-2

GARCIA, M. H. (ed.): Sedimentation Engineering. Processes, Measurements, Modeling, and Practice. ASCE Manuals and Reports on Engineering Practice No. 110. 2009. ISBN 978-0-7844-0814-8

SCHUMM, S.A.: River Variability and Complexity. Cambridge University Press. 2005. ISBN:0-521-84671-4.

Suggested literature:

CHARLTON, R.: Fundamentals of Fluvial Geomorphology. London Routledge. 2007. ISBN: 0-415-33453-5.

CALOW, P., PETTS, G.,E. (eds.): The Rivers Handbook. Hydrological and Ecological Principles. Volume 2. Blackwell Science. 1994. ISBN: 0-632-02985-4.

Study aids:

:PARKER, G.: 1D Sediment Transport Morphodynamics with Applications to Rivers and Turbidity Currents. 2004. (web site http://vtchl.uiuc.edu/people/parkerg/morphodynamics_e-book.htm).

Poznámka:

Rozvrh na zimní semestr 2022/2023:

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Čt	místnost TH:B-876 08:00–10:50 (přednášková par. 1) Thákurova 7 (FSv-budova A) B876místnost TH:B-873 11:00–12:50 (přednášková par. 1 paralelka 101) Thákurova 7 (FSv-budova A) B873
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Rozvrh na letní semestr 2022/2023:

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