Experimental Investigation of a Submerged Air-Water Bubbly Flow Jet in a Water Tank as a Model of Steel Casting
A. Khan1, E. K. Spiridonov1, D. F. Khabarova1, K. Sanaullah2, A. Badahar3, M. Zwawi3, M. Algarni3, B. Felemban4
1South Ural State University, Chelyabinsk, 454080, Russia
2Ton Duc Thang University, Ho Chi Minh City, Vietnam
3King Abdulaziz University, Rabigh, Saudi Arabia
4Taif University, Saudi Arabia
Keywords: литье, гидродинамика, пузырьки, струя, подводящая трубка, casting, hydrodynamics, bubbles, jets, downcomer
Abstract
Small-scale air-water experiments reported here contain all the important features of the industrial caster, the mold feed pipe, and the nozzles associated with it. The liquid is introduced into the feed pipe through an annulus with the gas entering at the center. The liquid travels down the walls of the feed pipe as a film until it encounters the pipe section containing a two-phase (air-water) bubbly mixture. Drift-flux relations are derived to compute the flow parameters (gas void fraction, horizontal velocity of the jet, etc.), which are found to be in good agreement with observations. The direction of the two-phase bubbly jet emerging from the nozzle is quantified, showing an improved downward deflection angle.
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