Simulation of free surface flow in a spillway with the rigid lid and volume of fluid methods and validation in a scale model
2010 (English)In: Proceedings, Fifth European Conference on Computational Fluid Dynamics / [ed] Jose C. F. Pereira; Adelia Sequeira; Jose M. C. Pereira, 2010Conference paper (Refereed)
Simulations on the spilling from a dam were performed and compared to experimental results from a physical scale model. Both mechanical and acoustic methods to measure the velocity were used. The model has three gates leading into the spillway that can be maneuvered separately. At first two of the gates were closed and the inlet flow was high enough to get a fully wetted outlet at the third gate. This case was simulated with a rigid lid approximation since the water surface was considered to be plane. The water surface level was taken from the scale model. In the second case, all three gates were open resulting in a free water surface through all the gates to the spillway. This case was simulated with the Volume of Fluids method were both water and air phase were considered. Water levels, velocities and the shape of the water surface were compared between simulations and experiments. The simulations capture both qualitative features such as a vortex near the outlet and show good quantitative agreement with the experiments.
Place, publisher, year, edition, pages
Research subject Fluid Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-40510Local ID: fac554c0-aad0-11df-a707-000ea68e967bISBN: 978-989-96778-1-4 (PDF)OAI: oai:DiVA.org:ltu-40510DiVA: diva2:1014032
European Conference on Computational Fluid Dynamics : 14/06/2010 - 17/06/2010
Godkänd; 2010; Bibliografisk uppgift: CD-ROM; 20100818 (aneane)2016-10-032016-10-03Bibliographically approved