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| Titel: |
Linear Diffusion and Internal Voltages in Conducting Enclosures Subjected to a Direct Lightning Strike |
| Auteur: |
Johnson, William A. Warne, Larry K. Chen, Kenneth C. Gurrola, Eric M. |
| Verschenen in: |
Electromagnetics |
| Paginering: | Jaargang 15 (1995) nr. 2 pagina's 189-207 |
| Jaar: |
1995-03-01 |
| Inhoud: |
Wall voltages interior to a conducting enclosure subjected to lightning currents are estimated. The results are applied to the specific problem of a cylindrical can with end caps subjected to symmetric axial lightning current. The voltage on the side wall of the can is approximated by the solution of a planar conducting slab excited by a plane magnetic field. The end caps are treated by solving the problem of a current filament terminating normally in an infinite planar slab. The integral transform solution of both these problems is given and reduced to a convergent series expansion which is summed numerically. Both early and late time approximations are given. The end cap problem is shown to be well approximated by the much simpler planar solution when applied incrementally from the effective static radius of the filament to the end cap radius. A simple circuit model is also presented, which very closely models the planar diffusion problem. Thus the complete cylindrical enclosure problem is approximately reduced to the closed form solution of this simple circuit model. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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