Title

A facility for gas- and condensed-phase measurements behind shock waves

Authors

Authors

E. L. Petersen; M. J. A. Rickard; M. W. Crofton; E. D. Abbey; M. J. Traum;D. M. Kalitan

Comments

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Abbreviated Journal Title

Meas. Sci. Technol.

Keywords

shock tube; chemical kinetics; combustion; aerosols; shock wave; laser; absorption; FREQUENCY-MODULATION SPECTROSCOPY; HIGH-TEMPERATURE; BOUNDARY-LAYER; TUBE; IGNITION; ENGINES; LASER; SIH2; Engineering, Multidisciplinary; Instruments & Instrumentation

Abstract

A shock-tube facility consisting of two, single-pulse shock tubes for the study of fundamental processes related to gas-phase chemical kinetics and the formation and reaction of solid and liquid aerosols at elevated temperatures is described. Recent upgrades and additions include a new high-vacuum system, a new gas-handling system, a new control system and electronics, an optimized velocity-detection scheme, a computer-based data acquisition system, several optical diagnostics, and new techniques and procedures for handling experiments involving gas/powder mixtures. Test times on the order of 3 ms are possible with reflected-shock pressures up to 100 atm, and temperatures greater than 4000 K. Applications for the shock-tube facility include the study of ignition delay times of fuel/oxidizer mixtures, the measurement of chemical kinetic reaction rates, the study of fundamental particle formation from the gas phase, and solid-particle vaporization, among others. The diagnostic techniques include standard differential laser absorption, FM laser absorption spectroscopy, laser extinction for particle volume fraction and size, temporally and spectrally resolved emission from gas-phase species, and a scanning mobility particle sizer for particle size distributions. Details on the set-up and operation of the shock tube and diagnostics are given, the results of a detailed uncertainty analysis on the accuracy of the test temperature inferred from the incident-shock velocity are provided, and some recent results are presented.

Journal Title

Measurement Science & Technology

Volume

16

Issue/Number

9

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

1716

Last Page

1729

WOS Identifier

WOS:000231997200004

ISSN

0957-0233

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