Comments (3)
ar4
commented on July 26, 2024
Dear Keting,
I am glad that you were able to find and understand the code for the
propagators. I believe I used the PML implementation that I found in PySIT.
I remember that at the time when I implemented it I also struggled to
understand where this came from, but it seemed to work and I think I
remember that it was simpler than other published PML methods that I found,
so I decided to use it. I have just verified that my 2D implementation does
indeed seem to be equivalent to the 2D implementation in PySIT:
https://github.com/pysit/pysit/blob/master/pysit/solvers/constant_density_acoustic/time/scalar/constant_density_acoustic_time_scalar_2D_4.h
. Do you think that a different formulation might be better?
…-Alan
from deepwave.
guoketing
commented on July 26, 2024
Dear Alan,
Thank you for your reply, I would see the PML method in the PySIT, and I will try to implement other PML methods in published papers, if they have better results compare to this method. I'll connect to you to improve the deepwave.
-Keing
from deepwave.
ar4
commented on July 26, 2024
The PML that was used in the previous versions of Deepwave was, as I mentioned, based on the one in PySIT. The author of PySIT discusses the origin of this PML here: pysit/pysit#34
I changed the PML in v0.0.10 of Deepwave to use the one proposed by Pasalic and McGarry, which I find to work better at near-grazing incidence (which is especially important if you do not have a free surface).
from deepwave.
Related Issues (20)
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