Numerical investigation of vortex formation at single and multiple symmetric horizontal intakes

Date

2024-4-26

Author

Aykan, Umut

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There is not a generalized equation in literature to identify critical submergence depth at single and multiple symmetric horizontal intakes. Existing equations often rely on some special cases and assumptions. Development of computational power in recent years allows simulation of these complex flows. In this study, vortex formation in symmetrical horizontal water intake structures composed of single and multiple intakes are investigated with a software using 3D numerical modelling named Flow-3D. Single, double, and triple intakes at different discharges are simulated and the depth of critical submergence which the air core vortex formation is observed for each case is specified and compared with the physical experimental results. Numerical simulations are consistently under estimating the critical submergence depth compared to the experimental results. It was observed that as the discharge increases critical submergence depth increases for single, double and triple intakes. It was also observed that for the similar intake discharges triple intakes have larger critical submergence depth than the double intakes.

Subject Keywords

Single and multiple symmetric horizontal intakes, Air-entraining vortices, Vortex formation, Critical submergence, Flow-3D

URI

https://hdl.handle.net/11511/109535

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Graduate School of Natural and Applied Sciences, Thesis