Changes between Version 11 and Version 12 of ComparesWell


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Timestamp:
Jan 28, 2019 5:16:20 PM (7 months ago)
Author:
tirons
Comment:

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  • ComparesWell

    v11 v12  
    1313Same as the above plots, but calculations were made at 20m depth.
    1414
    15 [[Image(Leroi_bcomp_20m_real.png)]][[Image(Leroi_bdiff_20m.png)]]
     15[[Image(Leroi_bcomp_20m_real.png)]][[Image(Leroi_bdiff_20m_real.png)]]
    1616
    1717In this plot, the horizontal components of the B field are shown at 20 m of depth.
    1818
    19 [[Image(Leroi_bcomp_20m_imag.png)]][[Image(Leroi_bdiff_20m.png)]]
     19[[Image(Leroi_bcomp_20m_imag.png)]][[Image(Leroi_bdiff_20m_imag.png)]]
    2020
    2121In all of these cases Lemma is in excellent agreement with Leroi, the main differences can be seen in fairly low-order effects near the loop corners. This difference can be attributed to the fact that Lemma integrates around a current source, using horizontal electric dipoles (HED). Leroi and most other codes decompose the surface area of the loop and approximate the surface with vertical magnetic dipoles (VMD). The VMD approach will therefore smooth out sharp corners. However, in reality, wires do not make perfectly sharp corners, and either approach is valid.