Numerical Simulation of Flow over Aerators on the Chute with an Anti-Arc Section by Turbulence Flow Model

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Abstract:

For a flow chute with complex boundary conditions, such as with an anti-arc section, the flow behaviors and characteristics of aeration after the aerator are more complex than that in the straight chute. Based on the k~ε turbulence flow model together with VOF method, flow velocity fields over the aerator on the chute with anti-arc section were numerical simulated. Model experiments were investigated to verify the simulation results. Comparison shows that the calculation results agree well with the observed experimental data. Some factors including radius of the anti arc, aerator’s height and takeoff angel which influence aerated flow are discussed.

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2543-2547

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] DL/T 5166-2002: Design Specification for River-bank Spillway, Issued by State Economic Trade Commission, P. R. China, (2002).

Google Scholar

[2] Brennen C.E., Some current advances in cavitation research, Proc. Korean Soc. Mech. Eng. 1997 Spring Annual Meeting C, 1997 pp.52-70.

Google Scholar

[3] Ozturk, Mualla, Aydin, Mehmet Cihan, Aydin, Seckin, Damage limitation-A new spillway aerator, J. International Water Power and Dam Construction, Vol. 60, n. 5(2008), pp.36-40.

Google Scholar

[4] N. L. de S. Pinto, S. H. Neidert and J. J. Ota, Aeration at high velocity flows, Water Power & Dam Construction, (March 1982), pp.42-44.

Google Scholar

[5] I. R. Wood, Aerators-The interaction of nappe and duct air entrainment, Int. Symp. On Hydr. For High Dams, IAHR (1988), pp.611-618.

Google Scholar

[6] Kramer, Kristian, Hager, Willi H., Minor, Hans-Erwin, Air detrainment in high-speed chute flows, J. Hydraulic Measurements and Experimental Methods, (July 2002), pp.83-92.

DOI: 10.1061/40655(2002)56

Google Scholar

[7] P. Rutschmannn, P. Volkart, Spillway chute aeration, J. Water Power & Dam Construction, (January 1988), pp.10-15.

Google Scholar

[8] Yimin Xu, Hongxuan Yang, Wei Zhao, Chunying Chen, Flow Characteristics on the Chute with a Concave Surface Influenced by the Air Intake of the Aerator, Applied Mechanics and Materials, Vols. 90~93(2011) pp.2559-2563.

DOI: 10.4028/www.scientific.net/amm.90-93.2559

Google Scholar

[9] Yimin Xu, Hongxuan Yang, Wei Zhao, Chunying Chen, Study on the Air Pressure and the Backwater in the Cavity of Aerator on the Chute with an Anti-arc Section, Advanced Materials Research, Vols. 446~449(2012) pp.2740-2744.

DOI: 10.4028/scientific5/amr.446-449.2740

Google Scholar