Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling
The chute aerator of a spillway is a structure in such a sense that air is, in the intense emulsification, entrained into the high-velocity water flow. Correctly predicting the air entrainment and two-phase flow pattern at the aerator would contribute to reliable spillway operation. Based on experim...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/4729128 |
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| _version_ | 1850177623931486208 |
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| author | Penghua Teng James Yang Michael Pfister |
| author_facet | Penghua Teng James Yang Michael Pfister |
| author_sort | Penghua Teng |
| collection | DOAJ |
| description | The chute aerator of a spillway is a structure in such a sense that air is, in the intense emulsification, entrained into the high-velocity water flow. Correctly predicting the air entrainment and two-phase flow pattern at the aerator would contribute to reliable spillway operation. Based on experimental data, 2D numerical simulations are preformed to predict streamwise air concentrations in the aerated flow, in which a two-fluid model is used. Depending on the air bubble size, relatively good agreement is seen with the experiments in the air cavity zone. The simulations give rise to higher air concentration downstream of the cavity, which is presumably due to underestimation of the interfacial forces in the two-fluid model. |
| format | Article |
| id | doaj-art-c3aae61f7bde4e10862edda9f7e7c924 |
| institution | OA Journals |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-c3aae61f7bde4e10862edda9f7e7c9242025-08-20T02:18:56ZengWileyModelling and Simulation in Engineering1687-55911687-56052016-01-01201610.1155/2016/47291284729128Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD ModellingPenghua Teng0James Yang1Michael Pfister2Hydraulic Engineering, Royal Institute of Technology (KTH), 100 44 Stockholm, SwedenHydraulic Engineering, Royal Institute of Technology (KTH), 100 44 Stockholm, SwedenCivil Engineering, Haute Ecole d’Ingénierie et d’Architecture de Fribourg (HEIA-FR), 1705 Fribourg, SwitzerlandThe chute aerator of a spillway is a structure in such a sense that air is, in the intense emulsification, entrained into the high-velocity water flow. Correctly predicting the air entrainment and two-phase flow pattern at the aerator would contribute to reliable spillway operation. Based on experimental data, 2D numerical simulations are preformed to predict streamwise air concentrations in the aerated flow, in which a two-fluid model is used. Depending on the air bubble size, relatively good agreement is seen with the experiments in the air cavity zone. The simulations give rise to higher air concentration downstream of the cavity, which is presumably due to underestimation of the interfacial forces in the two-fluid model.http://dx.doi.org/10.1155/2016/4729128 |
| spellingShingle | Penghua Teng James Yang Michael Pfister Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling Modelling and Simulation in Engineering |
| title | Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling |
| title_full | Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling |
| title_fullStr | Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling |
| title_full_unstemmed | Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling |
| title_short | Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling |
| title_sort | studies of two phase flow at a chute aerator with experiments and cfd modelling |
| url | http://dx.doi.org/10.1155/2016/4729128 |
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