http://www.k-wave.org/forum/topic/sensor-matrix-nan-for-3d-simulation Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 01:09:18 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/sensor-matrix-nan-for-3d-simulation#post-8360 Thu, 16 Dec 2021 10:11:34 +0000 Bradley Treeby 8360@http://www.k-wave.org/forum/ <p>Hi Nitish,</p> <p>This does sound like an instability. Is it solved by making the time step (or equivalently the CFL) smaller?</p> <p>Note, the function <code>checkStability</code> only gives an approximate answer in some circumstances (see documentation).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/sensor-matrix-nan-for-3d-simulation#post-8357 Tue, 14 Dec 2021 00:46:47 +0000 nitish_gade 8357@http://www.k-wave.org/forum/ <p>The sensor matrix has non-NaN values when run for less than 100 timesteps, however for more than 100 timesteps (i.e. t_end/dt &gt; 100) then the sensor matrix only has NaN values. Even with checking the dt using the builtin k-wave function (checkStability), it returns Inf, suggesting that all timesteps should be stable. Could someone help with this issue? </p>