A separated two-phase flow analysis to study deflagration-to-detonation transition (DDT) in granulated propellant

Herman Krier; James A. Kezerle

doi:10.1016/S0082-0784(79)80006-5

A separated two-phase flow analysis to study deflagration-to-detonation transition (DDT) in granulated propellant

Herman Krier, James A. Kezerle

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A two-phase reactive flow model is derived and solutions are applied to the analysis of the unsteady convective heat transfer in initially packed beds of granulated solid propellant or explosives. The resulting pressure wave and flame spreading event is considered the physical process that may provide for, deflagration-to-detonation transition (DDT) in such granulated beds. Discussions are included as to the appropriate constitutive laws required to complete the hydrodynamic model. The paper concludes with a brief assessment regarding both the limitations of the model and another possible DDT mechanism.

Original language	English (US)
Pages (from-to)	23-34
Number of pages	12
Journal	Symposium (International) on Combustion
Volume	17
Issue number	1
DOIs	https://doi.org/10.1016/S0082-0784(79)80006-5
State	Published - 1979

ASJC Scopus subject areas

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology
Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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10.1016/S0082-0784(79)80006-5

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title = "A separated two-phase flow analysis to study deflagration-to-detonation transition (DDT) in granulated propellant",

abstract = "A two-phase reactive flow model is derived and solutions are applied to the analysis of the unsteady convective heat transfer in initially packed beds of granulated solid propellant or explosives. The resulting pressure wave and flame spreading event is considered the physical process that may provide for, deflagration-to-detonation transition (DDT) in such granulated beds. Discussions are included as to the appropriate constitutive laws required to complete the hydrodynamic model. The paper concludes with a brief assessment regarding both the limitations of the model and another possible DDT mechanism.",

author = "Herman Krier and Kezerle, {James A.}",

note = "Funding Information: As would be expected if detonation is to follow ignition (and deflagration) it is necessary, above all, to ensure a sufficiently rap~d pressure buildup. In a porous combustible system, this is achieved as a result of the penetration of the gaseous combustion products into the porous interior which leads to accelerating ignition of additional burning surfaces. Thus heat transfer by conduction is replaced by convective heat transfer. The specific mechanism to achieve DDT is yet to be fully understood, but proposed phenomenological mechanisms have been {"}Work supported by US Air Force Office of Scientific Research under Grant AFOSR 77-3115.",

year = "1979",

doi = "10.1016/S0082-0784(79)80006-5",

language = "English (US)",

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AU - Krier, Herman

AU - Kezerle, James A.

N1 - Funding Information: As would be expected if detonation is to follow ignition (and deflagration) it is necessary, above all, to ensure a sufficiently rap~d pressure buildup. In a porous combustible system, this is achieved as a result of the penetration of the gaseous combustion products into the porous interior which leads to accelerating ignition of additional burning surfaces. Thus heat transfer by conduction is replaced by convective heat transfer. The specific mechanism to achieve DDT is yet to be fully understood, but proposed phenomenological mechanisms have been "Work supported by US Air Force Office of Scientific Research under Grant AFOSR 77-3115.

PY - 1979

Y1 - 1979

N2 - A two-phase reactive flow model is derived and solutions are applied to the analysis of the unsteady convective heat transfer in initially packed beds of granulated solid propellant or explosives. The resulting pressure wave and flame spreading event is considered the physical process that may provide for, deflagration-to-detonation transition (DDT) in such granulated beds. Discussions are included as to the appropriate constitutive laws required to complete the hydrodynamic model. The paper concludes with a brief assessment regarding both the limitations of the model and another possible DDT mechanism.

AB - A two-phase reactive flow model is derived and solutions are applied to the analysis of the unsteady convective heat transfer in initially packed beds of granulated solid propellant or explosives. The resulting pressure wave and flame spreading event is considered the physical process that may provide for, deflagration-to-detonation transition (DDT) in such granulated beds. Discussions are included as to the appropriate constitutive laws required to complete the hydrodynamic model. The paper concludes with a brief assessment regarding both the limitations of the model and another possible DDT mechanism.

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ER -

A separated two-phase flow analysis to study deflagration-to-detonation transition (DDT) in granulated propellant

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