Smooth and Stepped Converging Spillway Modeling Using the SPH Method
Three-dimensional (3D) simulations using the smoothed particle hydrodynamics (SPH) method were performed for smooth and stepped spillways with converging walls, in order to evaluate the influence of the wall deflection and the step macro-roughness on the main non-aerated flow properties. The simulat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/19/3103 |
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| author | Juliana D. Nóbrega Jorge Matos Harry E. Schulz Ricardo B. Canelas |
| author_facet | Juliana D. Nóbrega Jorge Matos Harry E. Schulz Ricardo B. Canelas |
| author_sort | Juliana D. Nóbrega |
| collection | DOAJ |
| description | Three-dimensional (3D) simulations using the smoothed particle hydrodynamics (SPH) method were performed for smooth and stepped spillways with converging walls, in order to evaluate the influence of the wall deflection and the step macro-roughness on the main non-aerated flow properties. The simulations encompassed a 1V:2H sloping spillway, wall convergence angles of 9.9° and 19.3°, and discharges corresponding to skimming flow regime, in the stepped chute. The overall development of the experimental data on flow depths, velocity profiles, and standing wave widths was generally well predicted by the numerical simulations. However, larger deviations in flow depths and velocities were observed close to the upstream end of the chute and close to the pseudo-bottom of the stepped invert, respectively. The results showed that the height and width of the standing waves were significantly influenced by the wall convergence angle and by the macro-roughness of the invert, increasing with a larger wall deflection, and attenuated on the stepped chute. The numerical velocity and vorticity fields, along with the 3D recirculating vortices on the stepped invert, were in line with recent findings on constant width chutes. |
| first_indexed | 2024-03-09T20:58:32Z |
| format | Article |
| id | doaj.art-a427850a813c4a94a55fe1cb46bbfbab |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:58:32Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a427850a813c4a94a55fe1cb46bbfbab2023-11-23T22:15:49ZengMDPI AGWater2073-44412022-10-011419310310.3390/w14193103Smooth and Stepped Converging Spillway Modeling Using the SPH MethodJuliana D. Nóbrega0Jorge Matos1Harry E. Schulz2Ricardo B. Canelas3School of Civil and Environmental Engineering, Federal University of Goiás, Goiânia 74605-220, GO, BrazilCivil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, PortugalDepartment of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, São Carlos 13566-590, SP, BrazilBentley Systems, 1990-208 Lisbon, PortugalThree-dimensional (3D) simulations using the smoothed particle hydrodynamics (SPH) method were performed for smooth and stepped spillways with converging walls, in order to evaluate the influence of the wall deflection and the step macro-roughness on the main non-aerated flow properties. The simulations encompassed a 1V:2H sloping spillway, wall convergence angles of 9.9° and 19.3°, and discharges corresponding to skimming flow regime, in the stepped chute. The overall development of the experimental data on flow depths, velocity profiles, and standing wave widths was generally well predicted by the numerical simulations. However, larger deviations in flow depths and velocities were observed close to the upstream end of the chute and close to the pseudo-bottom of the stepped invert, respectively. The results showed that the height and width of the standing waves were significantly influenced by the wall convergence angle and by the macro-roughness of the invert, increasing with a larger wall deflection, and attenuated on the stepped chute. The numerical velocity and vorticity fields, along with the 3D recirculating vortices on the stepped invert, were in line with recent findings on constant width chutes.https://www.mdpi.com/2073-4441/14/19/3103non-aerated flow regionskimming flowsmooth spillwaysmoothed particle hydrodynamicsstanding wavestepped spillway |
| spellingShingle | Juliana D. Nóbrega Jorge Matos Harry E. Schulz Ricardo B. Canelas Smooth and Stepped Converging Spillway Modeling Using the SPH Method Water non-aerated flow region skimming flow smooth spillway smoothed particle hydrodynamics standing wave stepped spillway |
| title | Smooth and Stepped Converging Spillway Modeling Using the SPH Method |
| title_full | Smooth and Stepped Converging Spillway Modeling Using the SPH Method |
| title_fullStr | Smooth and Stepped Converging Spillway Modeling Using the SPH Method |
| title_full_unstemmed | Smooth and Stepped Converging Spillway Modeling Using the SPH Method |
| title_short | Smooth and Stepped Converging Spillway Modeling Using the SPH Method |
| title_sort | smooth and stepped converging spillway modeling using the sph method |
| topic | non-aerated flow region skimming flow smooth spillway smoothed particle hydrodynamics standing wave stepped spillway |
| url | https://www.mdpi.com/2073-4441/14/19/3103 |
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