http://www.k-wave.org/forum/topic/kdiff-object-creating-t-matrix-of-nan-values Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:08:32 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/kdiff-object-creating-t-matrix-of-nan-values#post-8768 Sun, 21 May 2023 13:54:55 +0000 Bradley Treeby 8768@http://www.k-wave.org/forum/ <p>Can you post some minimal code that reproduces the problem? NaNs normally suggest some kind of instability, so the first thing to try would be reducing the time step / CFL. </p> http://www.k-wave.org/forum/topic/kdiff-object-creating-t-matrix-of-nan-values#post-8708 Sun, 26 Feb 2023 22:42:59 +0000 a.stark 8708@http://www.k-wave.org/forum/ <p>Hello there! In my code, I set up a tone burst signal that reaches a steady state; however, whenever I move onto the thermal simulation using kwavediffusion as an object and taking time steps, it results in T being computed as a matrix of NaN values, despite there being heat deposition values. </p> <p>In addition to this issue, I have also used kWaveDiffusion as an object in a for loop to take time steps when the signal is on and time steps when the signal is off to simulate a pulsed wave, and was wondering if that was okay.</p> <p>Thanks </p>