Results 211 to 220 of about 109,128 (264)
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Journal of Physics E: Scientific Instruments, 1984
A pneumatic valve has been designed to replace diaphragms in shock tubes and a diaphragmless shock tube has been constructed for use with the pneumatic valve. Performance tests have been carried out for the shock tube. The present apparatus is shown to be capable of producing shock waves up to 3.5 in Mach number and be convenient to use.
Y Takano, T Akamatsu
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A pneumatic valve has been designed to replace diaphragms in shock tubes and a diaphragmless shock tube has been constructed for use with the pneumatic valve. Performance tests have been carried out for the shock tube. The present apparatus is shown to be capable of producing shock waves up to 3.5 in Mach number and be convenient to use.
Y Takano, T Akamatsu
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Review of Scientific Instruments, 1966
A Twyman-Green arrangement with a narrow laser beam and twin photomultipliers is used to obtain positive indication of the direction of fringe movement, resolution of 1/12 of a fringe, and good discrimination against shock induced radiation. The instrument has been successfully applied to the study of ionization behind strong argon shocks.
Arthur L. Besse, Joseph G. Kelley
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A Twyman-Green arrangement with a narrow laser beam and twin photomultipliers is used to obtain positive indication of the direction of fringe movement, resolution of 1/12 of a fringe, and good discrimination against shock induced radiation. The instrument has been successfully applied to the study of ionization behind strong argon shocks.
Arthur L. Besse, Joseph G. Kelley
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Fundamental of Shock Waves and Shock Tube
2019A shock wave is a thin transitive area propagating at supersonic speed (Mach no., Ms > 1), and it is characterized by an abrupt change in flow properties like pressure, density and temperature. Shock tube is a laboratory test facility and is generally used to generate shock waves under controlled conditions.
Padmanabha Vivek, T. G. Sitharam
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Precursor Waves in Shock Tubes
The Physics of Fluids, 1963Weymann's observation of a wave of electrons propagating from a strong shock into the region ahead of it is considered. By taking into account the mutual electrostatic repulsion of the electrons through a simple approximation, the main features of the precursor wave motion can be explained.
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Magnetohydrodynamic Flow in a Shock Tube
The Physics of Fluids, 1959The effect of a transverse magnetic field on the motion of a perfectly conducting fluid in a shock tube is examined. A generalized form of the Riemann invariant for the continuous motion of such a fluid is combined with the conservation equations for a magnetohydrodynamic shock to obtain an exact description of the fluid motion in a shock tube in terms
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Journal of Microelectromechanical Systems, 2012
This paper reports on the design, microfabrication, characterization, and testing of the first instrumented micrometer-scale shock tube. This device was fabricated by a series of etching, deposition, and patterning processes of the different structural layers on a silicon substrate to first create an array of direct-sensing piezoelectric pressure ...
Gholamreza Mirshekari +1 more
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This paper reports on the design, microfabrication, characterization, and testing of the first instrumented micrometer-scale shock tube. This device was fabricated by a series of etching, deposition, and patterning processes of the different structural layers on a silicon substrate to first create an array of direct-sensing piezoelectric pressure ...
Gholamreza Mirshekari +1 more
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Journal of Applied Physics, 1953
By timing the successive arrivals of a shock at stations placed along the channel of a shock tube, measurements have been made of the decrease in shock velocity with travel. These measurements were carried out for shocks moving into air at atmospheric pressure.
R. J. Emrich, C. W. Curtis
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By timing the successive arrivals of a shock at stations placed along the channel of a shock tube, measurements have been made of the decrease in shock velocity with travel. These measurements were carried out for shocks moving into air at atmospheric pressure.
R. J. Emrich, C. W. Curtis
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Curvature of Shock Fronts in Shock Tubes
The Physics of Fluids, 1963Hartunian's theory for the curvature of a shock wave progressing into quiescent gas near a wall is extended to the cases of two parallel walls, of a rectangular tube and of a circular tube. Shock curvature is considered as caused both by laminar and by turbulent boundary layers along the walls behind the shock.
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1994
Abstract The simple shock tube is well established as a facility for investigating numerous problems in the physical sciences. A similar method has been extended to the study of cylindrical and spherical shock waves and expansion waves in Chapter 8.
Irvine I Glass, J P Sislian
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Abstract The simple shock tube is well established as a facility for investigating numerous problems in the physical sciences. A similar method has been extended to the study of cylindrical and spherical shock waves and expansion waves in Chapter 8.
Irvine I Glass, J P Sislian
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A cylindrical converging shock tube for shock-interface studies
Review of Scientific Instruments, 2014A shock tube facility for generating a cylindrical converging shock wave is developed in this work. Based on the shock dynamics theory, a specific wall profile is designed for the test section of the shock tube to transfer a planar shock into a cylindrical one.
Xisheng, Luo +3 more
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