A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modelling plane open-channel flows by coupled depth-averaged and RANS equations
Herein, a coupled depth-averaged (DA) and Reynolds-averaged Navier–Stokes (RANS) model is developed for steady plane open-channel flows with or without the assumption of hydrostatic pressure (HP). Initially, the water surface and the DA velocity are estimated using a DA model by neglecting non-uniform velocity (NUV) and non-HP (NHP). Then, in the RANS model, the horizontal momentum and the continuity equations are solved for the horizontal and vertical velocity components, respectively, with the water surface as a fixed zero-pressure boundary. For the non-hydrostatic RANS model, the pressure Poisson equation is solved for NHP. A correction term is introduced in the Reynolds horizontal momentum equation for mass balance. Once the RANS model results are available, the DA model results are updated iteratively by incorporating the effects of NUV and NHP. The agreement between the model and experimental data is quite satisfactory along with an excellent computational efficiency.
Modelling plane open-channel flows by coupled depth-averaged and RANS equations
Herein, a coupled depth-averaged (DA) and Reynolds-averaged Navier–Stokes (RANS) model is developed for steady plane open-channel flows with or without the assumption of hydrostatic pressure (HP). Initially, the water surface and the DA velocity are estimated using a DA model by neglecting non-uniform velocity (NUV) and non-HP (NHP). Then, in the RANS model, the horizontal momentum and the continuity equations are solved for the horizontal and vertical velocity components, respectively, with the water surface as a fixed zero-pressure boundary. For the non-hydrostatic RANS model, the pressure Poisson equation is solved for NHP. A correction term is introduced in the Reynolds horizontal momentum equation for mass balance. Once the RANS model results are available, the DA model results are updated iteratively by incorporating the effects of NUV and NHP. The agreement between the model and experimental data is quite satisfactory along with an excellent computational efficiency.
Modelling plane open-channel flows by coupled depth-averaged and RANS equations
Zobeyer, Hasan (author) / Steffler, Peter (author)
Journal of Hydraulic Research ; 50 ; 82-88
2012-02-01
7 pages
Article (Journal)
Electronic Resource
English
Modelling plane open-channel flows by coupled depth-averaged and RANS equations
| British Library Online Contents | 2012
Modelling plane open-channel flows by coupled depth-averaged and RANS equations
| Online Contents | 2012
Depth-Averaged Shear Stress and Velocity in Open-Channel Flows
| British Library Online Contents | 2010
Depth-Averaged Shear Stress and Velocity in Open-Channel Flows
| Online Contents | 2010
RANS COMPUTATIONS ON CURVED OPEN CHANNEL FLOWS
| British Library Online Contents | 2009