I would like to simulate the magnetic field (in time domain) at approx. 1m from a copper drain pipe (mounted vertically onto the wall of a house), caused by a lightning strike.
Does anyone have experience with setting up such simulation?
H=J/(2pi*r), J- current in pipe, r- distance
if L>>r , L- length of pipe
I would probably model the lightning as something like a mega-Amp pulse of current acting over a few microseconds. But you'd have to find more realistic values to plug in.
The lightning strike is to be simulated by a discrete port, one end touching the pipe. As excitation you've got to use a double exponential, following the analytical description of the strike (acc. to the MIL STD 464 if I am not wrong).
You then need to add a time domain magnetic field monitor to get the result.
Attached is a ppt with more details. Feel free to get in touch in case you need more details.
good luck
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