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Showing 1 to 11 of 11 for “"Shock tubes"”.
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Laser Interferometer Measurements of Particle Density Profiles in Electric Shock Tubes
Made available in DSpace on 2014-12-08T22:24:16Z (GMT). No. of bitstreams: 1 6801760.pdf: 2209323 bytes, checksum: fa147d95ba67769ec7ddba164295ea96 (MD5) Previous issue date: 1967
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Computational Fluid Dynamics-Informed Analysis of Diaphragm-Free Shock Tubes and Insert Designs
… simulation of a novel, compact, diaphragm-free shock tube is presented using computational fluid dynamics (CFD) in ANSYS Fluent 2022 R1 to better understand shock tube behavior for improved control in high-pressure, high-temperature shock experiments. The study quantifies geometric and viscous …
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On the formation of Friedlander waves in a compressed gas driven shock tube
Compressed gas driven shock tubes have become popular as a laboratory-scale replacement for field blast tests. The well-known initial structure of the Riemann problem eventually evolves into a shock structure resembling a Friedlander wave. In this thesis, we develop an analytical model to predict …
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Detailed Kinetic Modelling of the Oxidation and Combustion of Large Hydrocarbons Using an Automatic Generation of Mechanisms
… and n-decane/air mixtures in high-pressure shock tubes in a wide range of temperatures, pressures and equivalence ratios agree very well. Concentration profiles of the main products and intermediates of n-heptane, iso-octane and n-decane oxidation in jet-stirred reactors at a wide range of …
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Effect of endplate on the blast wave profile in a compressed gas shock tube
… mechanisms of primary blast injury. When a pure shock-blast wave encounters a subject, in the absence of shrapnel, casing or gaseous products, the loading is termed as primary blast loading, and its effects can be studied using shock tubes. The wave profile of the shock-blast wave produced by the …
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Manufacturing and Instrumentation of an Open End Compressed Air Shock Tube
<p>Shock tubes have been used extensively to study shock wave structures and high speed flow features. The purpose of constructing this open end shock tube was to have the ability to produce shock waves in a laboratory setting but also understand the exit flow coming out which can be applied to …
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Kinetic mechanisms for hydrocarbon ignition
… diffusion flames as well plug flow reactors and shock tubes. In Chapter 3 a mechanism for n-heptane is presented and successfully validated against experimental data. The agreement between calculations and measurements is very well. Thereafter, a mechanism for n-decane, which has to be the …
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A Meshless Method for Magnetohydrodynamics and Applications to Protoplanetary Disks
… a million amplitude linear MHD waves, magnetized shock tubes, and Kelvin-Helmholtz instabilities are presented. Finally we demonstrate good agreement with analytic predictions of linear growth rates for magnetorotational instability in a cylindrical geometry. We provide a rigorous methodology for …
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Bioagent defeat in shock driven gas flow
The problem of planar shock interaction with gas cylinders whose axis of symmetry is parallel to the plane of the shock has been well studied both experimentally and numerically, and in this case, the flow evolution driven by Richtmyer-Meshkov instability is well characterized (although, as this …
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Planar shock wave interaction with a multiphase cylinder
… study that visualizes the effects of a planar shock front passing through air (or SF6) randomly seeded with glycol droplets or smoke particles. It was observed, using a high-speed multiple-CCD (charge coupled device) camera, that an instability occurs as the shock wave bypasses the slow-moving …
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Modeling and Testing of Fast Response, Fiber-Optic Temperature Sensors
… is provided. For experimental validation tests, shock tubes were used to simulate the blast wave experienced at a distance of 3.0 m from the detonation of 22.7 kg of TNT. The flow conditions were predicted using idealized shock tube theory. The temperature sensors were tested in three …