The Modelling of Compound Channel Flow: Physical Model of River Blackwater
Rameshwaran, P.; Sun, X.; Shiono, K.; Chandler, J. H.; Sellin, R. H. J.. 2008 The Modelling of Compound Channel Flow: Physical Model of River Blackwater. In: Altinakar, M. S; Kokpinar, M. A.; Aydin, I.; Cokgor, S.; Kirkgoz, S., (eds.) River Flow 2008 - Proceedings of the International Conference on Fluvial hydraulics. Turkey, Kubaba Congress Department and Travel Services, 555-564.
Before downloading, please read NORA policies.
Text
CEH_Riverflow2008_FP.pdf Restricted to NORA staff only Download (1MB) |
Abstract/Summary
This paper compares results derived from a physical model representing the River Blackwater, to numerical simulation using both a two-dimensional (2D) and three-dimensional (3D) model. The 2D model solves the shallow water depth-averaged continuity and Navier-Stokes equations with the depth-averaged form of the k −ε turbulence model for free surface flow. The 3D model solves the three-dimensional Reynolds-averaged continuity and Navier-Stokes equations with the renormalization group (RNG) k −ε turbulence model for steady-state flow. The model results are evaluated against the experimental data obtained from a 1:5 scale physical model of the River Blackwater, located at the UK Flood Channel Facility. The predicted distributions of the streamwise velocity, secondary vectors and bed shear stress are used to investigate the flow processes along the channel. The 2D and 3D model results show that the three-dimensional model predicts the flow fields much better than the two-dimensional model.
Item Type: | Publication - Book Section |
---|---|
Programmes: | CEH Programmes pre-2009 publications > Water > WA02 Quantifying processes that link water quality and quantity, biota and physical environment > WA02.2 Hydrochemical and sediment processes |
UKCEH and CEH Sections/Science Areas: | Acreman |
ISBN: | 9786056013614 |
Additional Keywords: | Compound channel, Numerical model, Overbank flow, River Blackwater, Roughness |
NORA Subject Terms: | Ecology and Environment Earth Sciences Electronics, Engineering and Technology |
Date made live: | 19 Nov 2008 12:42 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/4636 |
Actions (login required)
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year