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Detonation Cell Width Measurements for H₂–N₂O–N₂–O₂–CH₄ –NH₃ Mixtures

Pfahl, U. and Schultz, E. and Shepherd, J. E. (1998) Detonation Cell Width Measurements for H₂–N₂O–N₂–O₂–CH₄ –NH₃ Mixtures. California Institute of Technology , Pasadena, CA. (Unpublished)

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Detonations of mixtures containing hydrogen and nitrous oxide were investigated in the GALCIT detonation tube (280 mm diameter, 7.3 m long). The facility and previous related studies are described in Akbar et al. (1997). We measured the detonation cell width, velocity and pressure for a range of equivalence ratios in three mixtures: 1) hydrogen-nitrous oxide; 2) hydrogen-nitrous oxide with 30% nitrogen dilution; 3) hydrogen-nitrous oxide with 30% nitrogen dilution further diluted 50% by air. In addition, we investigated the influence of adding 3% methane or 3% ammonia on the detonation behavior to hydrogen-nitrous oxide mixtures. Tests were conducted at initial pressures and temperatures of 70.9 kPa and 295 K, respectively. One-dimensional, steady, (ZND model) reaction zone calculations were performed with the modified Miller and Bowman hydrogen-nitrous oxide-methane-ammonia-oxygen-nitrogen mechanism (Akbar et al. 1997). These calculations were used to correlate and extrapolate the measured cell widths and also to determine the effect of initial conditions on the cell width.

Item Type:Report or Paper (Technical Report)
Shepherd, J. E.0000-0003-3181-9310
Alternate Title:Detonation Cell Width Measurements for H2–N2O–N2–O2–CH4–NH3 Mixtures
Group:Graduate Aeronautical Laboratories (Fluid Mechanics), GALCIT, Explosion Dynamics Laboratory
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Other Numbering System NameOther Numbering System ID
Explosion Dynamics Laboratory Report FM98-5
Record Number:CaltechGALCITFM:1998.005
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Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:25831
Deposited By: Imported from CaltechGALCITFM
Deposited On:20 Sep 2006
Last Modified:17 Nov 2021 17:33

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