Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling | Zendy

Penghua Teng | Zendy; James Yang | Zendy; Michael Pfister | Zendy

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Studies of Two-Phase Flow at a Chute Aerator with Experiments and CFD Modelling

Author(s) -

Penghua Teng,

James Yang,

Michael Pfister

Publication year - 2016

Publication title -

modelling and simulation in engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.264

H-Index - 20

eISSN - 1687-5591

pISSN - 1687-5605

DOI - 10.1155/2016/4729128

Subject(s) - air entrainment , aeration , mechanics , computational fluid dynamics , entrainment (biomusicology) , spillway , flow (mathematics) , volume of fluid method , bubble , airflow , materials science , environmental science , geotechnical engineering , geology , engineering , mechanical engineering , physics , acoustics , rhythm , waste management

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

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