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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003968naa a2200673 4500
001oai:DiVA.org:kth-33194
003SwePub
008110429s2011 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-197561
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-331942 URI
0247 a https://doi.org/10.1115/1.40025682 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1975612 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Appelgren, Patriku KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u14cqblp
2451 0a Interaction between solid copper jets and powerful electrical current pulses
264 c 2010-11-08
264 1b ASME International,c 2011
338 a print2 rdacarrier
500 a QC 20120130
520 a The interaction between a solid copper jet and an electric current pulse is studied. Copper jets that were created by a shaped-charge device were passed through an electrode configuration consisting of two aluminum plates with a separation distance of 150 mm. The electrodes were connected to a pulsed-power supply delivering a current pulse with amplitudes up to 250 kA. The current and voltages were measured, providing data on energy deposition in the jet and electrode contact region, and flash X-ray diagnostics were used to depict the jet during and after electrification. The shape of, and the velocity distributions along, the jet has been used to estimate the correlation between the jet mass flow through the electrodes and the electrical energy deposition. On average, 2.8 kJ/g was deposited in the jet and electrode region, which is sufficient to bring the jet up to the boiling point. A model based on the assumption of a homogenous current flow through the jet between the electrodes underestimates the energy deposition and the jet resistance by a factor 5 compared with the experiments, indicating a more complex current flow through the jet. The experimental results indicate the following mechanism for the enhancement of jet breakup. When electrified, the natural-formed necks in the jet are subjected to a higher current density compared with other parts of the jet. The higher current density results in a stronger heating and a stronger magnetic pinch force. Eventually, the jet material in the neck is evaporated and explodes electrically, resulting in a radial ejection of vaporized jet material.
650 7a TEKNIK OCH TEKNOLOGIERx Maskinteknik0 (SwePub)2032 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Mechanical Engineering0 (SwePub)2032 hsv//eng
653 a Aluminum plates
653 a Current flows
653 a Current pulse
653 a Electric current pulse
653 a Electrical current pulse
653 a Electrical energy
653 a Electrode configurations
653 a Electrode contacts
653 a Energy depositions
653 a Flash X-rays
653 a Jet breakup
653 a Mass flow
653 a Model-based
653 a Pulsed-power supplies
653 a Separation distances
653 a Copper
653 a Electric utilities
653 a Electrodes
653 a Electric power systems
653 a Engineering mechanics
653 a Teknisk mekanik
7001 a Carlsson, Torgny E.4 aut
7001 a Helte, Andreas4 aut
7001 a Hurtig, Tomas4 aut
7001 a Larsson, Anders4 aut
7001 a Lundberg, Patrik4 aut
7001 a Skoglund, Melker4 aut
7001 a Westerling, Lars4 aut
7102 a KTHb Rymd- och plasmafysik4 org
7730 t Journal of applied mechanicsd : ASME Internationalg 78:2q 78:2x 0021-8936x 1528-9036
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33194
8564 8u https://doi.org/10.1115/1.4002568
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-197561

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