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MathGroup Archive 2004

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Evaluating integral for magnetic field intensity using mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50594] Evaluating integral for magnetic field intensity using mathematica
  • From: "Edgar Y. Lobachevskiy" <lobachev at hawaii.edu>
  • Date: Sat, 11 Sep 2004 06:45:04 -0400 (EDT)
  • Organization: University of Hawaii
  • Sender: owner-wri-mathgroup at wolfram.com

Hi, all:

Did anyone try to use Mathematica to calculate the magnetix flux intensity
of a rectangular magnetic block at an arbitrary point xyz?  I am using the
formulat

H = -1/4pi*Integral [n' . M' (r_vector-r'_vector)
da'/(r_vector-r'_vector)^3]

I have seen the result done using mathematica, but when I try to evaluate
this integral on my computer the mathematica has been taking about 4 hours
and still did not produce any results?  Is there a trick to this problem?

-- 
Edgar Lobachevskiy
Physics Dept
University of Hawaii
PH:  808-956-2949
FAX:  808-956-7107




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