http://www.k-wave.org/forum/topic/about-the-wavenumber-in-the-kgrid Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 01:57:01 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/about-the-wavenumber-in-the-kgrid#post-6311 Mon, 05 Mar 2018 04:13:56 +0000 ZekuiJia 6311@http://www.k-wave.org/forum/ <p>Hi again,</p> <p>I thought about this question, and it seemed like that I have confused acoustic waves with electromagnetic waves, sorry to bother with this question.</p> <p>Thank you! </p> http://www.k-wave.org/forum/topic/about-the-wavenumber-in-the-kgrid#post-6307 Fri, 02 Mar 2018 07:44:51 +0000 ZekuiJia 6307@http://www.k-wave.org/forum/ <p>Hi Dr. Treeby and Dr. Cox,</p> <p>I am new to k-wave and I have a question about the wavenumber defined in kgrid. I am watching the k-wave user manual and it says that k = 2πf /c0. I am wondering shouldn't it be k = 2πf /c, and then c = c0/sqrt(εr * μr) ? (εr is relative permittivity, and μr is relative permeability.)</p> <p>I am asking this because I have got a list of data about a medium's relative permittivity, and I don't know how to apply them. I was thinking maybe I could change the wavenumber using the relative permittivity. That's where I came up with this question and got stuck.</p> <p>Thank you! </p>