http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 15:47:58 +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-source-in-ewp_3d_simulation#post-6282 Thu, 08 Feb 2018 22:23:32 +0000 bsombekke 6282@http://www.k-wave.org/forum/ <p>Dear Katianne,</p> <p>thanks for the post. Am also interested in simulating bathymetric related problems. Was wondering if you ended up using this software to solve your challenges? Or perhaps you recommend looking into alternatives.</p> <p>Kind regards<br /> Bernhard </p> http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation#post-6091 Sun, 06 Aug 2017 14:26:29 +0000 Bradley Treeby 6091@http://www.k-wave.org/forum/ <p>Hi Katianne,</p> <p>Changing dx will alter the maximum frequency your simulation can support. However, if you want to control your source frequency content more precisely, I'd suggest using a time varying stress source (specifying the normal components of the stress). For example, you could use a Gaussian of a particular length to change the frequency content, making sure that your dx is small enough to capture the highest frequency of interest.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation#post-6069 Fri, 21 Jul 2017 20:57:26 +0000 katianne.alcantara 6069@http://www.k-wave.org/forum/ <p>Thanks a lot. My problem was that i was not able to finding the source frequency for source.P0, but now i got it, i need to change dx, for change dt and consequently change the source frequency. </p> <p>Regards, </p> <p>Katianne. </p> http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation#post-6065 Fri, 21 Jul 2017 13:50:19 +0000 Bradley Treeby 6065@http://www.k-wave.org/forum/ <p>Hi katianne,</p> <p>Using <code>source.p0</code> in the elastic code assigns the initial pressure as the initial conditions for the normal components of the stress. Given your source is an air gun, this would seem like a reasonable assumption. Alternatively, you can specify the components of the stress (or the velocity) directly.</p> <p>Hope that helps,</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation#post-6058 Mon, 17 Jul 2017 14:41:38 +0000 katianne.alcantara 6058@http://www.k-wave.org/forum/ <p>Sorry, actually is the source in the source in ewp_layered medium that i am talking about. I would like to simulate in 3D the marine aquisition. </p> <p>Thank you. </p> http://www.k-wave.org/forum/topic/about-source-in-ewp_3d_simulation#post-6057 Mon, 17 Jul 2017 14:32:04 +0000 katianne.alcantara 6057@http://www.k-wave.org/forum/ <p>Hi Bradley!</p> <p>I would like to simulate a seismic marine aquisition with an explosive source(air gun) and i am not sure about your source in the ewp_3D example. Can you help me and clarify if this is exactly the source that i need for a realistic simulation? If so, how i know in this case the source frequency? Or if you can suggest other source a i am all ears . </p> <p>Thank you very much. </p>