Topic
Shock tube
About: Shock tube is a research topic. Over the lifetime, 6963 publications have been published within this topic receiving 99372 citations.
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TL;DR: In this article, the role of foam drainage in the shock wave/foam interaction steady state experiments and numerical simulations of the drainage phenomena were combined with the results of shock tube tests.
34 citations
TL;DR: In this paper, the authors measured ignition delay times for toluene/air mixtures (φ = 1.0) at high pressures (near 50 atm) over the temperature range of 966 to 1211 K using pressure and emission measurements behind reflected shock waves.
Abstract: Recent ignition delay time studies of toluene ignition (using shock tubes and rapid-compression machines) have not achieved a strong consensus at intermediate temperatures (900-1200 K) and high pressures (near 50 atm). However, the development and refinement of reaction mechanisms for toluene at engine-relevant conditions demand an accurate knowledge of these ignition delay times. To help resolve this issue, we have measured ignition delay times for toluene/air mixtures (φ = 1.0) at high pressures (near 50 atm) over the temperature range of 966 to 1211 K using pressure and emission measurements behind reflected shock waves. The new ignition delay times were found to be in good agreement with the previous study of Davidson et al. [Davidson, D. F., Gauthier, B. M., and Hanson, R. K., "Shock Tube Ignition Measurements of Iso-Octane/Air and Toluene/Air at High Pressures," Proceedings of the Combustion Institute, Vol. 301, 2005, pp. 1175-1182.]. Although the preignition pressure-time histories varied with the shock-tube loading protocol (e.g., cleaning and passivating), the ignition delay times were not significantly affected. Ignition delay time measurements were also compared with the predictions of several current toluene reaction mechanisms, and updated reaction rate values were suggested to improve modeling performance.
34 citations
TL;DR: In this article, a variety of low-vapor-pressure biodiesel surrogates were measured behind reflected shock waves, using an aerosol shock tube, and the results were compared to those derived from applicable mechanisms available in the literature.
34 citations
TL;DR: In this article, a numerical analysis of a gas-particle mixture in a shock tube is performed, where a semi-empirical formula for a single particle is assumed to calculate the drag and heat transfer rate of the particle cloud.
34 citations
13 Jun 2016
TL;DR: In this article, the phase speed of disturbances observed in a small shock tube was measured via cross-correlation of successive frames from focusing schlieren videography and double focused laser differential interferometry.
Abstract: Measurements and calculations of the phase speed of disturbances observed in a small shock tube are made, via cross-correlation of successive frames from focusing schlieren videography and double focused laser differential interferometry. The efficacy of the latter technique for measuring slender-body hypersonic boundary-layer instability wave-packets is also demonstrated. Shock tube experiments are performed to provide a known velocity input to both sensors for comparison, and measurements of phase velocity are made behind the reflected shock. Power spectral density curves from the FLDI and focusing schlieren from shock tube experiments at similar conditions are compared with each other and with pitot tube results, and reasonable agreement is found to the frequency limits of the sensors.
34 citations