k-Wave

1. jjb7481
   

   Member
   Joined: Nov '22
   Posts: 3

   Hello,

   I am attempting to model a lithotripter, which typically consists of a source function that is entirely compression (all positive pressure). No matter the exact wave shape or source type, when I plug in such a source, the result always has a very strong rarefaction following the compression (introduction of negative pressure) AT the source itself. That is, the source function is not what the source outputs in k-wave. I have some physical and mathematical reasoning from acoustics textbooks for why this occurs but measurements do not show this phenomenon and so I would like to eliminate it. I would simply like the output of my sources to be what I plug in. Any ideas/assistance?

   Posted 7 months ago #

2. jjb7481
   

   Member
   Joined: Nov '22
   Posts: 3

   Also worth noting, I have tried filtering my sources according to the automatic filtering k-wave does due to grid refinement limitations, and have verified that that automatic filtering is not the cause of the negative pressure.

   Posted 7 months ago #

3. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,640

   See this post which might help explain what you see.

   Posted 5 months ago #

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