ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29
ISSN Imprimir: 2150-766X
Volumes:Volume 19, 2020 Volume 18, 2019 Volume 17, 2018 Volume 16, 2017 Volume 15, 2016 Volume 14, 2015 Volume 13, 2014 Volume 12, 2013 Volume 11, 2012 Volume 10, 2011 Volume 9, 2010 Volume 8, 2009 Volume 7, 2008 Volume 6, 2007 Volume 5, 2002 Volume 4, 1997 Volume 3, 1994 Volume 2, 1993 Volume 1, 1991
International Journal of Energetic Materials and Chemical Propulsion
FLAME SPREADING AND VIOLENT ENERGY RELEASE PROCESS OF ALUMINUM TUBING IN LIQUID AND GASEOUS OXYGEN ENVIRONMENTS
M. M. Mench
Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, U.S.A.
P. A. Houghton
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
J. G. Hansel
Air Products and Chemicals, Inc. Allentown, PA 18195-1501, USA
The intense reaction observed between aluminum and oxygen in a liquid oxygen (LOX) environment has been termed a violent energy release (VER) reaction, but the details of the combustion process are not fully understood. In this study, the promoted ignition, flame spreading, and combustion phenomena of aluminum 3003 alloy tubing filled with LOX, surrounded by a shell of gaseous oxygen (GOX), were observed. Parameters that were systematically varied include the tube- and shell-side GOX and LOX pressures, flow rates, oxygen purities, as well as igniter location, tube-side GOX quality, and sample thickness. An extremely high flame spreading rate, a high luminosity flame-zone, and a very rapid rate of heat release characterize the VER burning mode. The effect of tube- or shell-side impurity is to raise the threshold pressure for self-sustained combustion and VER transition. Decreased wall thickness tends to lower the threshold pressure for self-sustained combustion and transition to VER. It is believed that the VER flame-spreading mode is primarily a result of high convective mass flux of oxygen into the reaction zone due to oxygen phase transition; this process greatly enhances both the reaction rate and the molten material removal rate.
|Portal Digital Begell||Biblioteca digital da Begell||eBooks||Diários||Referências e Anais||Coleções de pesquisa|