Numerical Prediction On Air Entrainment In Pump Intakes.
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Pump intake is designed to provide adequate water supply to pumps. It is essential to design the pump intake to provide fairly uniform and swirl free flow to pumps. However, it is not always possible due to site constraints. Investigation of pump intake is required prior to installing the pumps at site. There are two approaches (experimental and numerical) followed for such investigation. The present paper describes a case study wherein air entrainment (vortex with full air-core) was observed in experimental study at lowest water level (LWL) in the original geometry. The pump intake was modified with a goal to eliminate air entrainment. The experimental model was built with these modifications and the air entrainment was seen to be eliminated. The model was investigate using a numerical approach. A commercial code was used to carry out two-phase flow studies to capture air entrainment. The paper brings out results and observations for both numerical and experimental approaches.
Shukla, Shyam N.; Kshirsagar, Jagadish T. (2008). Numerical Prediction On Air Entrainment In Pump Intakes.. Texas A&M University. Turbomachinery Laboratories. Available electronically from