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  • 1
    Electronic Resource
    Electronic Resource
    Interaction of a shock wave with a two-phase interface (1994)
    Springer
    Shock waves 3 (1994), S. 193-199 
    Details
    ISSN: 1432-2153
    Keywords: Interface acceleration ; Numerical simulation ; Particle-gas mixture ; Shock interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics , Technology
    Notes: Abstract The acceleration by an incident shock of a planar interface between a gas and a particle-gas mixture has been investigated experimentally and numerically. The experiments were conducted in a newly developed vertical shock tube in which the planar interface of the particle-gas mixture was generated and its particle concentration history was measured. Polydisperse corn starch particles with a mean diameter of 10μm were used. We recorded the motion of the interface, as well as of the incident and reflected shock by using a 4 channel spark shadowgraph. The experimental conditions were Mach numberM s=5.15 and initial pressurep 1=50kPa for various particle concentrations in nitrogen. The reflected shock appears with a delay after the incident shock enters the particle-gas mixture. Numerical methods were employed to solve the two-phase governing equations. Experiments and numerical solutions are in good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414713
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Behavior of detonation waves at low pressures (1998)
    Springer
    Shock waves 8 (1998), S. 55-61 
    Details
    ISSN: 1432-2153
    Keywords: Key words:Detonation re-initiation, Galloping detonation, Near-limit detonation, Spontaneous ignition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics , Technology
    Notes: Abstract. With respect to stability of gaseous detonations, unsteady behavior of galloping detonations and re-initiation process of hydrogen-oxygen mixtures are studied using a detonation tube of 14 m in length and 45 mm i.d. The arrival of the shock wave and the reaction front is detected individually by a double probe combining of a pressure and an ion probe. The experimental results show that there are two different types of the re-initiation mechanism. One is essentially the same as that of deflagration to detonation transition in the sense that a shock wave generated by flame acceleration causes a local explosion. From calculated values of ignition delay behind the shock wave decoupled from the reaction front, the other is found to be closely related with spontaneous ignition. In this case, the fundamental propagation mode shows a spinning detonation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001930050098
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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