DocumentCode :
868855
Title :
Energy Partition and Scaling Issues in a Railgun
Author :
Satapathy, Sikhanda ; Vanicek, Harold
Author_Institution :
Inst. for Adv. Technol., Univ. of Texas, Austin, TX
Volume :
43
Issue :
1
fYear :
2007
Firstpage :
178
Lastpage :
185
Abstract :
We performed numerical simulations to characterize a conceptual naval railgun and to compute the spatial and temporal energy partitions among the kinetic, thermal, and magnetic energies. A numerical study was then undertaken to assess whether the energy partition, thermal, and kinematic characteristics can be examined through a subscale experiment. It turns out that not all field quantities can be consistently scaled, because the field equations involve both diffusion and wave equations. Three subscale cases-where displacement, velocity, and acceleration profiles were kept the same as the full-scale profiles-were considered. The velocity-matching scaling seems to provide the best case for subscale testing of thermal characteristics of a railgun. The results are expected to provide guidance for thermal management schemes and for suitable subscale tests
Keywords :
naval engineering; numerical analysis; railguns; testing; diffusion equation; energy partition; kinetic energy; magnetic energy; naval railgun; subscale testing; thermal energy; velocity matching scaling; wave equation; Acceleration; Conducting materials; Kinematics; Partial differential equations; Railguns; Rails; Temperature; Testing; Thermal management; Thermal stresses; Consistent scaling; coupled physics; energy partition; railguns; thermal management;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2006.887684
Filename :
4033104
Link To Document :
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