Fundamental equation of state of liquid nitromethane to 100 kbar

Lysne, P. C.; Hardesty, D.R.

doi:10.1063/1.1680031

Cited by 65 publications

(49 citation statements)

References 22 publications

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“…Besides, Yoo et al [22] pointed out that shocked NM remains transparent in the spectral range 0.35-0.75 µm. The radiant temperature after shock entrance, prior to the detonation transition, reaches 2500 K. Such a temperature is not in agreement with Chaiken model, which predicts a shock temperature of about 1000 K. It is also clearly greater than those predicted by Lysne and Hardesty [23] (1100-1200 K) or Winey and Gupta [24] (1000 K). Yet a similar high temperature has been also recorded by pyrometry technique in the visible range in the same single sustained shock experiments [15] and in multiple-shock experiments performed at the CEG [25,26].…”

Section: Discussionmentioning

confidence: 52%

Shock-to-detonation transition of nitromethane: Time-resolved emission spectroscopy measurements

Bouyer

Darbord

Hervé

et al. 2006

Combustion and Flame

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The objective of this work is to improve the knowledge of the shock-to-detonation transition of nitromethane. The study is based on a spectral analysis in the range 0.3-0.85 µm, with a 28-nm resolution, during experi-ments of plane shock impacts on explosive targets at 8.6 GPa. The time-resolved radiant spectra show that the detonation front, the reaction products produced during the superdetonation, and the detonation products are semitransparent. The temperature and absorption coefficient profiles are determined from the measured spectra by a mathematical inversion method based on the equation of radiative transfer with Rayleigh scattering regime. Shocked nitromethane reaches at least 2500 K, showing the existence of local chemical reactions after shock entrance. Levels of temperature of superdetonation and steady-state detonation are also determined.

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Section: Discussionmentioning

confidence: 52%

Shock-to-detonation transition of nitromethane: Time-resolved emission spectroscopy measurements

Bouyer

Darbord

Hervé

et al. 2006

Combustion and Flame

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“…Lysne and Hardesty's EOS [4] development utilized a numerical analysis of experimental data. They measured Hugoniot data for a range of different initial temperatures, and obtained a complete thermodynamic description of 0.1 MPa isobar.…”

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confidence: 99%

Calculation of Hugoniot properties for shocked nitromethane based on the improved Tsien’s EOS

2010

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We have calculated the Hugoniot properties of shocked nitromethane based on the improved Tsien's equation of state (EOS) that optimized by "exact" numerical molecular dynamic data at high temperatures and pressures. Comparison of the calculated results of the improved Tsien's EOS with the existed experimental data and the direct simulations show that the behavior of the improved Tsien's EOS is very good in many aspects. Because of its simple analytical form, the improved Tsien's EOS can be prospectively used to study the condensed explosive detonation coupling with chemical reaction.

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“…The shock is only supported for 300 ps, and all measurements are made during this time window. Figure 1 illustrates Hugoniot data for acrylonitrile, phenylacetylene, nitromethane, and carbon disulfide measured with plate impact data [8][9][10][11][12][13][14][15] recorded on nanosecond to microsecond time scales along with laser driven shock data measured on picosecond time scales. 4,5,16 The arrows mark the onset of deviation of the Hugoniot from the universal liquid Hugoniot along the particle velocity axis.…”

Section: Experimental Methodsmentioning

confidence: 99%

Interaction between measurement time and observed Hugoniot cusp due to chemical reactions

McGrane

Brown

Bolme

et al. 2017

AIP Conference Proceedings

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Abstract. Chemistry occurring on picosecond timescales can be observed through ultrafast laser shock drive experiments that measure Hugoniot data and transient absorption. The shock stress needed to induce chemical reactions on picosecond time scales is significantly larger than the stress needed to induce reactions on nanosecond time scales typical of gas gun and explosively driven plate impact experiments. This discrepancy is consistent with the explanation that increased shock stress leads to increased temperature, which drives thermally activated processes at a faster rate. While the data are qualitatively consistent with the interpretation of thermally dominated reactions, they are not a critical test of this interpretation. In this paper, we review data from several shocked liquids that illustrate a Hugoniot cusp due to volume changing reactions that occurs at higher shock stress states in picosecond experiments than in nanosecond to microsecond experiments. We also correlate the observed Hugoniot cusp states with transient absorption changes that occur due to the buildup of reaction products.

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Fundamental equation of state of liquid nitromethane to 100 kbar

Cited by 65 publications

References 22 publications

Shock-to-detonation transition of nitromethane: Time-resolved emission spectroscopy measurements

Shock-to-detonation transition of nitromethane: Time-resolved emission spectroscopy measurements

Calculation of Hugoniot properties for shocked nitromethane based on the improved Tsien’s EOS

Interaction between measurement time and observed Hugoniot cusp due to chemical reactions

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