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The Resource Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer, John R. Schmidt and Michael J. Nusca, (electronic resource)

Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer, John R. Schmidt and Michael J. Nusca, (electronic resource)

Creator
Contributor
Summary
There is significant experimental evidence that burning particles of various chemical compositions and sizes are ejected from gun primers and that these particles interact with the propellant grains during main charge ignition. This explicit ignition phenomenon is thought to be incompatible with the implicit treatment of primer function in conventional interior ballistics codes and models. Generally, the primer efflux is treated as a hot gas that evolves from a specified region in the model's representation of the gun chamber (usually along the chamber centerline and near the breech). What amounts to an igniter table is arrived at by experimental means and by careful calibration of the interior ballistics simulation using gun firing data. With the advent of multidimensional, multiphase interior ballistics codes which employ coupled Eulerian-Lagrangian schemes to explicitly treat both the gas and solid phase, the time is ripe for a primer model that is commensurate with the availability of such an interior ballistics model. Progress in the development of a primer model that is compatible with the ARL-NGEN3 interior ballistics code and small-caliber weapons is described herein. The model is based on the One Dimensional Turbulence modeling approach that has recently emerged as a powerful tool in multiphase simulations. Initial results are shown for the model run as a stand-alone code and are compared to recent experiments with small-caliber primers
Language
eng
Work
Publication
Extent
1 online resource (vi, 36 p.)
Note
  • Title from title screen (viewed April 2, 2010)
  • "August 2006."
Link
http://purl.access.gpo.gov/GPO/LPS121239
Instance
Label
Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer
Title
Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer
Statement of responsibility
John R. Schmidt and Michael J. Nusca
Creator
Contributor
Subject
Language
eng
Summary
There is significant experimental evidence that burning particles of various chemical compositions and sizes are ejected from gun primers and that these particles interact with the propellant grains during main charge ignition. This explicit ignition phenomenon is thought to be incompatible with the implicit treatment of primer function in conventional interior ballistics codes and models. Generally, the primer efflux is treated as a hot gas that evolves from a specified region in the model's representation of the gun chamber (usually along the chamber centerline and near the breech). What amounts to an igniter table is arrived at by experimental means and by careful calibration of the interior ballistics simulation using gun firing data. With the advent of multidimensional, multiphase interior ballistics codes which employ coupled Eulerian-Lagrangian schemes to explicitly treat both the gas and solid phase, the time is ripe for a primer model that is commensurate with the availability of such an interior ballistics model. Progress in the development of a primer model that is compatible with the ARL-NGEN3 interior ballistics code and small-caliber weapons is described herein. The model is based on the One Dimensional Turbulence modeling approach that has recently emerged as a powerful tool in multiphase simulations. Initial results are shown for the model run as a stand-alone code and are compared to recent experiments with small-caliber primers
Member of
Cataloging source
DTICE
http://library.link/vocab/creatorName
Schmidt, John R
Government publication
federal national government publication
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
Period covered
January 2005-December 2005.
http://library.link/vocab/relatedWorkOrContributorName
  • Nusca, Michael J
  • U.S. Army Research Laboratory
Series statement
ARL-TR
Series volume
3860
http://library.link/vocab/subjectName
  • Ballistics, Interior
  • Propellants
  • Ordnance
  • Projectiles
  • Guns
  • Ballistics
  • Fluid Mechanics
  • Turbulence
  • Gas flow
  • Gun chambers
  • Interior ballistics
  • Functions
  • Simulation
  • Chemical composition
  • Coding
  • Particles
  • Ammunition
  • Ignition
  • Calibration
  • Propellant grains
  • Solid phases
  • Igniters
  • Gunfire
  • Guns
  • Hot gases
  • Tables(data)
  • Self contained
  • Combustion
  • Primers
  • Phase
  • Models
Type of report
Final;
Label
Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer, John R. Schmidt and Michael J. Nusca, (electronic resource)
Link
http://purl.access.gpo.gov/GPO/LPS121239
Instantiates
Publication
Note
  • Title from title screen (viewed April 2, 2010)
  • "August 2006."
Bibliography note
Includes bibliographical references (p. 24-27)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
unknown
Extent
1 online resource (vi, 36 p.)
Form of item
electronic
Governing access note
Approved for Public Release
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
ill.
Specific material designation
remote
Label
Progress in the development of a multiphase turbulent model of the gas/particle flow in a small-caliber ammunition primer, John R. Schmidt and Michael J. Nusca, (electronic resource)
Link
http://purl.access.gpo.gov/GPO/LPS121239
Publication
Note
  • Title from title screen (viewed April 2, 2010)
  • "August 2006."
Bibliography note
Includes bibliographical references (p. 24-27)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
unknown
Extent
1 online resource (vi, 36 p.)
Form of item
electronic
Governing access note
Approved for Public Release
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
ill.
Specific material designation
remote

Subject

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