Detonation cell widths in hydrogen-air-diluent mixtures [electronic resource].
- Rockville, Md. : U.S. Nuclear Regulatory Commission, 1990. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (18 pages) : digital, PDF file
- Additional Creators:
- Sandia National Laboratories, U.S. Nuclear Regulatory Commission, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- In this paper I report on the influence of steam and carbon dioxide on the detonability of hydrogen-air mixtures. Data were obtained on the detonation cell width in a heated detonation tube that is 0.43 m in diameter and 13.1 m long. The detonation cell widths were correlated using a characteristic length calculated from a chemical kinetic model. The addition of either diluent to a hydrogen-air mixture increased the cell width for all equivalence ratios. For equal diluent concentrations, however, carbon dioxide not only yielded larger increases in the cell width than steam, but its efficacy relative to steam was predicted to increase with increasing concentration. The range of detonable hydrogen concentrations in a hydrogen-air mixture initially at 1 atm pressure was found to be between 11.6 percent and 74.9 percent for mixtures at 20°C and 9.4 percent and 76.9 percent for mixtures at 100°C. The detonation limit was between 38.8 percent and 40.5 percent steam for a stoichiometric hydrogen-air-steam mixture initially at 100°C and 1 atm. 10 refs., 4 figs., 1 tab.
- Published through SciTech Connect., 01/01/1990., "sand-90-2251c", " conf-9010207--1", "DE91000771", 1990 combustion institute fall meeting, San Diego, CA (USA), 14-16 Oct 1990., and Stamps, D.W.
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