Download or read book Investigation of Vapor Explosions with Single Molten Metal Drops in Water Using Flash X ray written by Gaby Ciccarelli and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the present study, flash x-ray photography as well as high speed regular photography was used to investigate the fragmentation process during the vapor explosion of single drops of molten metal in water. For drops heated to 700$ sp circ$C, a vapor bubble is formed around the drop after a short induction time of about 80 $ mu$s which grows to a maximum diameter and then collapses. X-ray radiographs, which can "see through" the vapor bubble, show that filaments of metal protruding from the drop surface are produced during the bubble growth. At the time of the bubble collapse, the drop surface is highly convoluted and a second interaction is initiated producing an even larger second bubble in the case of tin drops. A mechanism based on nonuniform superheating and evaporation of the water upon unstable film collapse is proposed to describe the origin of the melt filaments. For liquid drops under isothermal conditions with the water, fragmentation occurs as mass is stripped off the surface due to relative motion of the water. For hot drops at higher flow velocities (i.e., $>$45 m/s) initially a vapor bubble forms but it is quickly displaced downstream. It is proposed that evaporation at the upstream surface of the bubble generates a vapor flow around the drop surface which strips the drop surface. The vapor flow carries the fragments into the bubble region behind the drop. The vapor later condenses leaving a cloud of fragments which are subsequently dispersed by the water. The dynamics of the vapor bubble produced by the explosion of a hot drop under low flow conditions is modeled using a parametric model incorporating the Rayleigh equation for bubble dynamics and an energy equation for the vapor to account for added heat transfer from the distorting drop surface. Estimates of the total heat transferred from the drop show that only 3% of the initial drop thermal energy is converted into work done by the vapor bubble." --

Download or read book Vapor Explosions in One dimensional Large Scale Geometry written by Hyun-Sun Park and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Aspects of Explosion Phenomena written by A. L. Kuhl and published by AIAA. This book was released on 1993 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Investigation of the Vapor Explosion Phenomena Using a Molten metal Jet Injected Into Distilled Water written by Raymond Henry Bradley and published by . This book was released on 1971 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Previews of Heat and Mass Transfer written by and published by . This book was released on 1995 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1993-07 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Heat Transfer written by and published by Academic Press. This book was released on 1997-06-12 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heat Transfer is designed to fill the information gap between regularly scheduled journals and university level textbooks by providing in-depth review articles over a broader scope than is allowablein either journals or texts. Volume 29 is a special volume devoted to nuclear reactor safety.

Download or read book Experimental Studies of Thermal and Chemical Interactions Between Molten Aluminum and Nuclear Dispersion Fuels with Water written by Ali Farahani and published by . This book was released on 1997 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1982 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Proceedings of the Workshop on Severe Accident Research Held in Japan SARJ 98 written by Jun Sugimoto and published by . This book was released on 1999 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vapor Explosions written by Philip Watts and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Topical Meeting on Advanced Reactors Safety written by and published by . This book was released on 1997 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study Into the Cause of Molten Metal water Explosions written by Fredrick E. Brauer and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parametric Study of Vapor Explosions Using Flash X rays written by Philip Watts and published by . This book was released on 1994 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effect of fluid properties on the fragmentation behavior of a single molten metal drop interacting explosively with coolant has been investigated experimentally with high-speed regular photography and flash x-ray radiography to visualize the bubble dynamics and drop fragmentation, respectively. Single (0.5 g) drops of tin, bismuth, gallium and Cerrolow heated to between 600-800$ sp circ$C interacting with water at 70$ sp circ$C were investigated. Comparison of the x-ray radiographs shows that in each case the fragmentation occurs in two stages (corresponding to two bubble oscillations). Similar vapor explosions were also observed for molten tin drops interacting with 1-propanol, although the period and amplitude of bubble oscillations both decreased. For 0.1 g aluminum drops heated to 900$ sp circ$C and dropped in water, only a single large interaction was observed." --