NPE - Nonlinear parabolic equation

(2 posts) (2 voices)

bm24

Member
Joined: Dec '20
Posts: 1

Hello everyone,

I am a novice in nonlinear acoustics simulation. I was surfing through the various codes, but couldn't find an implementation of the NPE equation, a close relative of the KZK equation, but with a different numerical implementation that involves time-moving window and Flux Corrected Transport method to treat the non linear term.
I'd appreciate any help from more experienced users.

Thank you!
Jasper

Posted 3 years ago #
Bradley Treeby

Developer
Joined: Mar '10
Posts: 1,640

Hi Jasper,

The nonlinear equation solved in k-Wave (in the functions kspaceFirstOrder3D etc) is described in this paper. All of the codes in k-Wave implement full wave models (i.e., discretise x,y,z and step in t). Aside from the two angular spectrum codes, there are none that implement moving time windows and step in space.

Brad.

Posted 3 years ago #

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