Journal ArticleDOI
A miniature high repetition rate shock tube
Robert S. Tranter,Patrick Lynch +1 more
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TLDR
A miniature high repetition rate shock tube with excellent reproducibility has been constructed to facilitate high temperature, high pressure, gas phase experiments at facilities such as synchrotron light sources where space is limited and many experiments need to be averaged to obtain adequate signal levels.Abstract:
A miniature high repetition rate shock tube with excellent reproducibility has been constructed to facilitate high temperature, high pressure, gas phase experiments at facilities such as synchrotron light sources where space is limited and many experiments need to be averaged to obtain adequate signal levels. The shock tube is designed to generate reaction conditions of T > 600 K, P < 100 bars at a cycle rate of up to 4 Hz. The design of the apparatus is discussed in detail, and data are presented to demonstrate that well-formed shock waves with predictable characteristics are created, repeatably. Two synchrotron-based experiments using this apparatus are also briefly described here, demonstrating the potential of the shock tube for research at synchrotron light sources.read more
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Journal ArticleDOI
Recent advances in laser absorption and shock tube methods for studies of combustion chemistry
TL;DR: In this article, a review of laser absorption and shock tube methodologies for studies of combustion chemistry is presented, along with a brief discussion of newly emerging laser-diagnostic techniques and a summary of future research directions.
Journal ArticleDOI
Dependence of Calculated Postshock Thermodynamic Variables on Vibrational Equilibrium and Input Uncertainty
TL;DR: In this article, the authors explore the dependence of calculated post-shock thermodynamic properties in shock tube experiments upon the vibrational state of the test gas and upon the uncertain post-shaking temperature.
Journal ArticleDOI
Probing combustion chemistry in a miniature shock tube with synchrotron VUV photo ionization mass spectrometry.
TL;DR: An automated, miniature, high-repetition-rate shock tube was developed and can be used to study high-pressure reactive systems behind reflected shock waves, and it is anticipated that this high pressure technique will greatly complement those lower pressure techniques.
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Photoelectron Photoion Coincidence Spectroscopy Provides Mechanistic Insights in Fuel Synthesis and Conversion
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Functional Relationships between Kinetic, Flow, and Geometrical Parameters in a High-Temperature Chemical Microreactor.
Marsel V. Zagidullin,Ralf I. Kaiser,D. P. Porfiriev,Igor P. Zavershinskiy,Musahid Ahmed,Valeriy N. Azyazov,A. M. Mebel +6 more
TL;DR: Simulation and isothermal approximation allowed the derivation of analytical relationships between the kinetic, gas flow, and geometrical parameters of the microreactor, which accurately predict the experimental observations, and a clear strategy for measuring rate coefficients of (pseudo) first-order bimolecular and unimolecular reactions using themicroreactor was proposed.
References
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Untangling the chemical evolution of Titan's atmosphere and surface–from homogeneous to heterogeneous chemistry
Ralf I. Kaiser,Pavlo Maksyutenko,Courtney Ennis,Fangtong Zhang,Xibin Gu,Sergey P. Krishtal,Alexander M. Mebel,Oleg Kostko,Musahid Ahmed +8 more
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Journal ArticleDOI
Sensitive detection of temperature behind reflected shock waves using wavelength modulation spectroscopy of CO2 near 2.7 μm
TL;DR: In this article, wavelength modulation spectroscopy with second-harmonic detection (WMS-2f) is used to provide a new sensor for sensitive and accurate measurement of the temperature behind reflected shock waves in a shock-tube.