Boiling curves in relation to quenching of a high temperature moving surface with liquid jet impingement |
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| Authors: | M. Gradeck A. Kouachi M. Lebouché F. Volle D. Maillet J.L. Borean |
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| Affiliation: | 1. LEMTA Nancy University, CNRS, Vandoeuvre-lès-Nancy, France;2. ARCELOR MITTAL Research, Maizières-lès-Metz, France;1. Nippon Steel & Sumitomo Metal Corp., 20-1 Shintomi, Futtsu, Chiba 293-8511, Japan;2. Nippon Steel & Sumikin Technology, 20-1 Shintomi, Futtsu, Chiba 293-8511, Japan;3. Nippon Steel & Sumitomo Metal Corp., 25-3 Tokai, Tokai, Aichi 476-8686, Japan;4. Nippon Steel & Sumitomo Metal Corp., 1-8 Fuso, Amagasaki, Hyogo 660-0891, Japan;5. Faculty of Engineering, Kyushu University, 744 Moto-oka, Nishi, Fukuoka 819-0395, Japan;6. Faculty of Mechanical Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan;1. Department of Mechanical Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur 313001, Rajasthan, India;2. Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttranchal, India;3. Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400085, India;1. Department of Energy Conversion Systems, Korea Institute of Machinery & Materials, Daejeon 34103, South Korea;2. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;1. Department of Energy Conversion Systems, Korea Institute of Machinery & Materials, Daejeon 34103, South Korea;2. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA |
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| 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/l of 18, in a range of subcooling from 10 to 83 K, 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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