Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
3D flow and sediment transport modeling in curved channels
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik, Vattendragsteknik.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik, Vattendragsteknik.ORCID-id: 0000-0002-2342-2068
2007 (engelsk)Inngår i: 3rd IASTED International Conference on Environmental Modelling and Simulation, EMS 2007: Honolulu, HI: 20 August 2007 through 22 August 2007, 2007, s. 82-87Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A 3D hydrodynamic model coupled with a 2D bed load transport model is used to predict flow and sediment transport in a curved channel. The 3D hydrodynamic model is part of ECOMSED (open source code). ECOMSED has a long history of successful applications to oceanic, coastal, and estuarine waters. However, curved channel applications of the code are scarce. Improvements in the advection scheme of momentum and turbulence, and shear stress partitioning were necessary to reproduce realistic and comparable results in a curved channel. To account for the dynamics of the mobile bed boundary, a model for the bed load transport was included in the code. The model reproduced measured secondary currents, bed shear stress distribution, and erosion-deposition patterns on a curved channel.

sted, utgiver, år, opplag, sider
2007. s. 82-87
Emneord [en]
2D bed load transport model; 3D hydrodynamic model; Curved channel; ECOMSED; Modeling
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-8246Scopus ID: 2-s2.0-38349106483ISBN: 978-0-88986-682-9 (tryckt)OAI: oai:DiVA.org:kth-8246DiVA, id: diva2:13517
Merknad
QC 20100827Tilgjengelig fra: 2008-04-22 Laget: 2008-04-22 Sist oppdatert: 2020-01-02bibliografisk kontrollert
Inngår i avhandling
1. Modeling flow and sediment transport in water bodies and watersheds
Åpne denne publikasjonen i ny fane eller vindu >>Modeling flow and sediment transport in water bodies and watersheds
2008 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The research focus is on the various modeling aspects of flow and sediment transport in water bodies and watersheds. The interaction of flow with a mobile bed involves a complex process in which various turbulent scales characterized by coherent structures cause a chaotic sediment motion. In many rivers and natural waterways secondary flows that are dominating flow struc-tures bring about more complications. In estuaries and open waterbodies thermal stratification and internal mixing control the flow structure besides the flow interaction with the mobile bed. To adequately model these processes 3D coupled flow and transport models are needed. The research is based on use and adaptation of open source codes for 3D hydrodynamic and sediment transport model known as Estuarine Coastal Ocean Model (ECOMSED) and the Soil and Water Assessment Tool (SWAT) model. A bed load transport model was developed and coupled to ECOMSED. The flow and sediment transport characteristics in a curved channel and a river reach were successfully captured by the model. Improvements in ECOMSED were made to study the effect of wind and basin bathymetry on mixing and flow exchange between two estuaries. Using spectral analysis the hydrological component of SWAT model was investigated for its applicability under limited data conditions in three Ethiopian catchments.

sted, utgiver, år, opplag, sider
Stockholm: KTH, 2008. s. viii, 21
Serie
Trita-LWR. PHD, ISSN 1650-8602 ; 1039
Emneord
Bed load transport model, ECOMSED, Hydrology, Hydrodynamics, Spectral Analysis, SWAT
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4703 (URN)978-91-7178-925-9 (ISBN)
Disputas
2008-05-08, F3, Lindstedtvägen 26, Kungliga Tekniska högskolan | Adress SE-100 44 Stockholm | Telefon +46 8 790 60 00, KTH, 10:00
Opponent
Veileder
Merknad
QC 20100827Tilgjengelig fra: 2008-04-22 Laget: 2008-04-22 Sist oppdatert: 2010-08-27bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

ScopusActa Press

Søk i DiVA

Av forfatter/redaktør
Mekonnen, Muluneh AdmassDargahi, Bijan
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 618 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf