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Boiling curves in relation to quenching of a high temperature moving surface with liquid jet impingement

Abstract : Experimental investigations have been conducted for quenching of a hot rotating cylinder with initial temperature of about 500-600°C by a subcooled planar water jet. An original experimental device allowing the estimation of the local boiling curves in the case of a static surface and of a moving surface has been designed. Heat fluxes were measured on both side of the axis of the jet until a reduced distance x/ of 18, in a range of subcooling from 10 to 83K, for a jet velocity from 0,8 to 1,2 m/s and for a velocity flow-surface ratio (uS/uj) from 0.5 to 1.25. In the case of static surface, the measurements confirmed the existence of a “shoulder of flux” in the stagnation zone of the jet. In the case of a moving surface, the maximum of heat transfer (for a given regime) is moving during the cooling time from downstream (film boiling regime) to upstream (forced convection).
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https://hal.univ-lorraine.fr/hal-01580004
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Submitted on : Thursday, August 31, 2017 - 11:11:15 PM
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Michel Gradeck, Arsène Kouachi, Fabien Volle, Denis Maillet, Michel Lebouché, et al.. Boiling curves in relation to quenching of a high temperature moving surface with liquid jet impingement. International Journal of Heat and Mass Transfer, Elsevier, 2009, 52 (5-6), pp.1094-1104. ⟨10.1016/j.ijheatmasstransfer.2008.09.015⟩. ⟨hal-01580004⟩

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