http://www.k-wave.org/forum/topic/stability-problem-1 Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 22:00:16 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/stability-problem-1#post-8970 Wed, 29 Nov 2023 19:55:24 +0000 Bradley Treeby 8970@http://www.k-wave.org/forum/ <p>I haven’t looked at your code, but in general, it’s a good an idea to run a convergence test by continuing to decrease the time step / CFL until the answer no longer changes. However, there’s not currently an automated way to do this I’m afraid. </p> http://www.k-wave.org/forum/topic/stability-problem-1#post-8901 Wed, 23 Aug 2023 23:38:19 +0000 masud407 8901@http://www.k-wave.org/forum/ <p>I am running an elastic simulation using pstdelastic2D(). I have been following the following paper for the elastography simulation.</p> <p><a href="https://pubs.aip.org/asa/poma/article/29/1/020002/955366/Simulation-of-shear-wave-elastography-imaging" rel="nofollow">https://pubs.aip.org/asa/poma/article/29/1/020002/955366/Simulation-of-shear-wave-elastography-imaging</a></p> <p>For the first part, I am using kspaceorder3d() from where I calculated the ARF and stresses which will be the input for the second simulation. I am using a water-solid interface here. However, I can see that the elastic simulation has a stability problem. Now if I reduce the cf1 value it will reduce the stability a bit, however, is there any other way I can check to reduce the instability problem? </p> <p>Link of instability image for my case: <a href="https://drive.google.com/file/d/1iEdEOATzfwrGZ58tBhoknmobr7oE0Z__/view?usp=drive_link" rel="nofollow">https://drive.google.com/file/d/1iEdEOATzfwrGZ58tBhoknmobr7oE0Z__/view?usp=drive_link</a> </p>