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@ARTICLE{Ramachandran:52667,
author = {Ramachandran, K. and Marqués, J.-L. and Vaßen, R. and
Stöver, D.},
title = {{M}odelling of arc behaviour inside a {F}4 {APS} torch},
journal = {Journal of physics / D},
volume = {39},
issn = {0022-3727},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {PreJuSER-52667},
pages = {3323 - 3331},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {The plasma arc inside the F4 torch used for atmospheric
plasma spraying is characterized by means of analytical and
numerical methods. A simplified analytical model is
formulated to understand the physical behaviour of the
plasma arc. A three-dimensional numerical model is developed
to simulate the realistic plasma arc flow inside the torch.
At a given torch power and gas flow rate, possible
combinations of the arc core radius and arc length are
predicted. The thermodynamic principle of minimum entropy
production is used to determine the combination of arc core
radius and arc length, which corresponds to the actual
physical situation of the arc inside the torch. The effect
of arc current and gas flow rate on the plasma arc
characteristics is clarified. The effect of hydrogen content
in the plasma gas on its velocity and temperature profiles
at the nozzle exit is shown. Predicted torch efficiencies
are comparable to measured ones. The results of the
numerical model are similar to that an analytical model.
Previously published experimental and numerical results
support part of the present results.},
keywords = {J (WoSType)},
cin = {IWV-1 / JARA-ENERGY},
ddc = {530},
cid = {I:(DE-Juel1)VDB5 / $I:(DE-82)080011_20140620$},
pnm = {Rationelle Energieumwandlung},
pid = {G:(DE-Juel1)FUEK402},
shelfmark = {Physics, Applied},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000239578800029},
doi = {10.1088/0022-3727/39/15/015},
url = {https://juser.fz-juelich.de/record/52667},
}