Experimental and numerical investigation of armature/stator contact in magnetic flux compression generators

Jahan Rasty, Xiaobin Le, Andreas Neuber, Jim Dickens, Magne Kristiansen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The efficiency of a Magnetic Flux Compression Generators (MFCG) is highly dependent on the expanding characteristics of the exploding armature and the nature of contact between the armature and the surrounding stator coil. A hydrodynamic Finite Element (FE) model was developed to simulate the expansion characteristics of the armature and its ensuing impact with the stator. The effectiveness of the FE model to simulate the explosive behavior of the armature was qualified by comparing the numerical results with experimentally measured parameters. Specifically, the radial displacement of the armature as well as the axial velocity of the armature/stator contact point were measured experimentally and compared with numerical results showing excellent agreement between the two. The results indicated that the radial and axial velocity with which the armature impacted the stator did not change through the length of the armature. However, the results showed that the velocity with which the contact point between the armature and the stator traveled along the length of the armature decreased as the explosion process went on. As expected, the axial propagation velocity of the contact point was found to be at its highest value (2.25 X detonation velocity) at the region close to the detonation end while approaching the detonation velocity at points away from the detonation end.

Original languageEnglish
Title of host publicationPPPS 2001 - Pulsed Power Plasma Science 2001
EditorsMark Newton, Robert Reinovsky
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages106-109
Number of pages4
ISBN (Electronic)0780371208, 9780780371200
DOIs
StatePublished - 2015
Event28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001 - Las Vegas, United States
Duration: Jun 17 2001Jun 22 2001

Publication series

NamePPPS 2001 - Pulsed Power Plasma Science 2001
Volume1

Conference

Conference28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001
CountryUnited States
CityLas Vegas
Period06/17/0106/22/01

Fingerprint Dive into the research topics of 'Experimental and numerical investigation of armature/stator contact in magnetic flux compression generators'. Together they form a unique fingerprint.

Cite this