http://www.k-wave.org/forum/topic/npe-nonlinear-parabolic-equation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 22:33:40 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/npe-nonlinear-parabolic-equation#post-8008 Tue, 19 Jan 2021 19:58:22 +0000 Bradley Treeby 8008@http://www.k-wave.org/forum/ <p>Hi Jasper,</p> <p>The nonlinear equation solved in k-Wave (in the functions <code>kspaceFirstOrder3D</code> etc) is described in <a href="http://www.k-wave.org/papers/2012-Treeby-JASA.pdf">this paper</a>. 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.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/npe-nonlinear-parabolic-equation#post-7976 Fri, 04 Dec 2020 15:19:23 +0000 bm24 7976@http://www.k-wave.org/forum/ <p>Hello everyone,</p> <p>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.<br /> I'd appreciate any help from more experienced users.</p> <p>Thank you!<br /> Jasper </p>