Effects of Attenuating Materials on Detonation Induction Distances in Gases

Evans, Marjorie W.; Given, Frank I.; Richeson, William E.

doi:10.1063/1.1722162

Cited by 33 publications

(3 citation statements)

References 7 publications

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“…For example, in a porous walled material, Evans et al (1955) found that the onset of detonation was delayed. In compliant thin plastic-walled tubes Murray (1985) observed that there is no progressive amplification of the transverse waves as a result of the reflection from the walls.…”

Section: Introductionmentioning

confidence: 97%

Detonation attenuation by foams and wire meshes lining the walls

Teodorczyk

Lee

1995

Shock Waves

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Abstract. In the present study systematic photographic investigations were performed of detonation interactions with foams and wire meshes lining the channel walls. An initial cellular detonation wave was propagating along a damping section (acoustic absorbing walls) which removed the transverse waves associated with its cellular structure. In some cases the wave had failed and a fast deflagration wave (a shock followed by a decoupled flame) was obtained and propagated at about half the C-J detonation speed. The events were studied photographically using a high speed framing camera and smoked foils.

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Section: Introductionmentioning

confidence: 97%

Detonation attenuation by foams and wire meshes lining the walls

Teodorczyk

Lee

1995

Shock Waves

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“…Perhaps the earliest experiment on detonation and shock wave absorption was reported by Evans et al (1955), who studied the transition to detonation in a tube lined with an acoustic damping material (porous sintered bronze) and found that the transition was delayed or even prevented. Later it was recognized that transverse waves are essential to the propagation of detonation waves and Strehlow (1969), Fowles (1984) and Edwards (1969) are amongst many who contributed to our present understanding of the microscopic nature of detonation strucCorrespondence to : Changming Guo (e-mail: cmguo@ustc.edu.cn) ture and the significance of the detonation 'cell'.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of gaseous detonation propagation over acoustically absorbing walls

Guo

Thomas

et al. 2002

Shock Waves

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“…Perhaps the most convincing experiment that indicates their important role is the work of Evans et al (1955). Perhaps the most convincing experiment that indicates their important role is the work of Evans et al (1955).…”

Section: Introductionmentioning

confidence: 99%

Propagation of Detonation Waves in an Acoustic Absorbing Walled Tube

1988

Dynamics of Explosions

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The present study attempts to demonstrate the essential role of transverse waves in the propagation of a detonation by eliminating them. A cellular detonation was generated in a smooth tube and propagated through a short section where an acoustic absorbing material was lined on the tube wall. The absorbing material consisted of a metallic grid rolled up several times to vary its thickness. The influence of grid parameters on the propagation of the detonation downstream of the grid was analyzed for a series of fuel-oxygen mixtures, at various initial pressures, in tubes of different diameters.Streak records enabled the evolution of the detonation wave to be observed and the velocity to be measured over a field of view upstream and downstream of the grid. The patterns drawn on downstream smoked foils could confirm the presence or disappearance of transverse waves at the exit of the grid section. The reflected pressure from the grid layers was compared to that from a rigid wall, via pressure transducers.If only initial pressure is varied for a given mixture, there exists a very distinct critical pressure below which the detonation suffers a total lack of cellular structure downstream of the grid and an abrupt drop in velocity of 40% -60% of the upstream near the

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Effects of Attenuating Materials on Detonation Induction Distances in Gases

Cited by 33 publications

References 7 publications

Detonation attenuation by foams and wire meshes lining the walls

Detonation attenuation by foams and wire meshes lining the walls

Experimental study of gaseous detonation propagation over acoustically absorbing walls

Propagation of Detonation Waves in an Acoustic Absorbing Walled Tube

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