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Multiphase flow models for 2 D numerical modeling of flow over spillways
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kositgittiwong, Duangrudee Chinnarasri, Chaiyuth Julien, Pierre Y. Ruff, James F. Meroney, Robert N. |
| Copyright Year | 2010 |
| Abstract | Stepped spillways are becoming increasingly popular due to the low-cost in construction and high efficiency. Numerical modeling of stepped spillways is very complicated and challenging because of the high roughness and velocity recirculation regions. Two types of multiphase flow models are used: a mixture multiphase flow model (MMF) and a volume of fluid multiphase flow model (VOF). The differences between both models are the phases interpenetrating and the phase velocities. In both models, the realizable k-ε model is chosen to simulate turbulence. The computational results are compared with large-scale experimental data from Colorado State University. The spillway was 1.22m wide and consisted of 25 horizontal steps each 0.61m high and 1.22m long. The discharge was varied from 0.57 to 3.28 m 3 /s. The data series obtained for model comparison include; velocity profiles, air concentration, and characteristics of flow. Both models can satisfactorily simulate the flow pattern and the recirculation regions. The velocity profiles are more accurately simulated using the VOF model. The MMF model gave satisfactory results for air concentration. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.engr.colostate.edu/~meroney/PapersPDF/CEP09-10-5.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
