Aio Vibrational Temperature Measurements From Burning Aluminum Particles at Elevated Pressure

Glumac, Nick; Servaites, James; Krier, Herman

doi:10.1080/00102200108935840

Cited by 11 publications

(7 citation statements)

References 3 publications

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“…Using high resolution spectra of the AlO B-X transition, AlO vibrational temperatures have been determined by fitting the spectra to a model [4,6,19,24,[39][40][41][42][43][44][45]. AlO emission has also been used to determine the concentration of AlO molecules [12,45].…”

Section: Introductionmentioning

confidence: 99%

On AlO Emission Spectroscopy as a Diagnostic in Energetic Materials Testing

Peuker

Lynch

Krier

et al. 2013

Propellants Explo Pyrotec

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The emission of AlO is commonly observed in tests involving aluminum combustion in propellants and explosives. Such emission has been used as a signature of combustion, as a tool for measuring ignition and reaction times, and as a thermometer. This paper provides a critical review of methodologies exploiting AlO emission spectroscopy as a quantitative tool in energetics testing. Controlled tests involving aluminized explosives, as well as those using added alumina, are conducted, in which AlO emission is quantified and compared to total oxidation in the final residue. Experimental parameters such as optical depth and fireball confinement are systematically varied to examine the effect on AlO emission. We find that thermometry using AlO remains valid, and a new approach to using low resolution spectra is proposed. However, AlO emission spectroscopy or photometry can be quantitatively correlated to ignition and burning time, or used to infer the presence or absence of aluminum combustion, only under a limited set of circumstances. Factors that limit the ability to use AlO emission quantitatively are discussed in depth.

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Section: Introductionmentioning

confidence: 99%

On AlO Emission Spectroscopy as a Diagnostic in Energetic Materials Testing

Peuker

Lynch

Krier

et al. 2013

Propellants Explo Pyrotec

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“…Nevertheless, further experiments performed by the latter authors [20] in similar conditions as [19], but with better optical diagnostics and analyses, measured the flame temperature in the range 3000-3200 K for P=8.5 atm in CO2/Ar and CO2/N2. Therefore, because of this large temperature scattering, PCO is estimated for two particle temperatures (T=3000 and 3500 K), with PT=60 atm, and xCO,f=0.3, that is respectively PCO=17.3 and 14.3 atm.…”

Section: Input Parametersmentioning

confidence: 92%

“…Furthermore, other works have shown that the temperature of the flame surrounding the particle varies from T=3000 K to T=3800 K for different oxidizers at P=1atm [1,6,17,18]. However, the influence of the pressure on the flame temperature is not clearly demonstrated because [7] indicated that Tflame was quite independent of PCO2 and was around 3200 K, when [19] showed that it may be higher than 4300 K at 8.6 atm in CO2/Ar mixtures but with important uncertainties (500-1400 K).…”

Section: Input Parametersmentioning

confidence: 99%

Dissolution kinetics of carbon in aluminum droplet combustion: Implications for aluminized solid propellants

Sarou‐Kanian

Rifflet

Millot

et al. 2007

Combustion and Flame

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“…[25][26][27][28] Moreover, by using the high-resolution spectra of the AlO B-X transition, AlO vibrational temperatures can be determined. 20,21,[29][30][31][32][33][34][35][36] These findings suggest that the presence of AlO serves as clear evidence of an Al combustion process on a microsecond time scale.…”

Section: Introductionmentioning

confidence: 99%

Microsecond timescale combustion of aluminum initiated by an underwater electrical wire explosion

et al. 2019

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We report a direct observation of the microsecond time scale combustion of aluminum realized in underdamped electrical explosions of aluminum wires in the water environment. Experiments were conducted using a pulse power generator delivering a 200 kA current amplitude within an $1 ls rise-time. Time-resolved spectroscopy was applied to obtain the spectrum of AlO oxide absorption bands, and the temperature of oxides was determined. The results show that decreasing the wire diameter and increasing the discharge current density allow one to decrease the time delay in the appearance of AlO absorption bands to 1 ls with respect to the beginning of the wire explosion and significantly increase the rate of aluminum combustion up to $1.3 Â 10 3 g/s.

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Aio Vibrational Temperature Measurements From Burning Aluminum Particles at Elevated Pressure

Cited by 11 publications

References 3 publications

On AlO Emission Spectroscopy as a Diagnostic in Energetic Materials Testing

On AlO Emission Spectroscopy as a Diagnostic in Energetic Materials Testing

Dissolution kinetics of carbon in aluminum droplet combustion: Implications for aluminized solid propellants

Microsecond timescale combustion of aluminum initiated by an underwater electrical wire explosion

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