http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 21:36:16 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-9021 Thu, 25 Jan 2024 14:57:49 +0000 tiagodourado 9021@http://www.k-wave.org/forum/ <p>Thanks for the feedback Bradley Treeby, but I really need the second option.<br /> I'll try it based on the suggestions you gave in the previous comment.</p> <p>Grateful</p> <p>Tiago Dourado </p> http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-9018 Wed, 24 Jan 2024 11:47:07 +0000 Bradley Treeby 9018@http://www.k-wave.org/forum/ <p>Do you mean source velocities or an anisotropic sound speed? The former is already possible, the latter is not. </p> http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-9009 Fri, 19 Jan 2024 15:11:16 +0000 tiagodourado 9009@http://www.k-wave.org/forum/ <p>Dear k-Wave community,</p> <p>I would like to know if there is already a routine or script implemented in k-Wave so that it is possible to insert different velocities per direction to enable simulation in fluids.</p> <p>I thank the attention</p> <p>Tiago Dourado </p> http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-4948 Thu, 22 Jan 2015 19:21:24 +0000 Bradley Treeby 4948@http://www.k-wave.org/forum/ <p>Hi Steven,</p> <p>This is an interesting problem. There are a few different approaches you could take. First, you could extend the code to take into account the non-zero background particle velocity. The equations you'd need to solve are outlined by Coulouvrat in <a href="http://dx.doi.org/10.1016/j.wavemoti.2011.07.002">this paper</a>. Note the additional terms in the mass and momentum conservation equations compared to those solved in k-Wave. </p> <p>Second, you could solve an anisotropic wave equation such as the one described <a href="http://dx.doi.org/10.1190/1.1444815">here</a>. If you're not comfortable with coding this up, one option would be to find a general anisotropic elastic wave solver, and use it to just model the compressional wave. </p> <p>Finally, as Andrew mentioned, in some situations, you may also be able to model an equivalent situation by moving the source rather than the medium as described in <a href="http://www.k-wave.org/documentation/example_tvsp_doppler_effect.php">The Doppler Effect Example</a>.</p> <p>Hope that helps,</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-4936 Thu, 15 Jan 2015 15:55:07 +0000 ouelletn 4936@http://www.k-wave.org/forum/ <p>Steven,<br /> It seems like what you are doing is very close to Doppler imaging, in this case you may want to look at other posts about this using the search function in the forums.<br /> -Andrew </p> http://www.k-wave.org/forum/topic/ultrasonic-flow-sensor-simulation#post-4931 Mon, 05 Jan 2015 16:07:58 +0000 quetzl 4931@http://www.k-wave.org/forum/ <p>Dear all,</p> <p>I would like to simulate the wave propagation in an ultrasonic flow measuring device. The medium (e.g. water) however is in motion and the propagation speed of the wave is the result of the speed of sound as well as the flow speed of the fluid. The fluid flow however is a vector field, not a scalar field like the speed of sound. Is it possible to simulate this with this toolbox, or could the could be adjusted to incorporate this behavior. Would replacing the speed of sound (c) in the code by a vector expression of some sort be a valid approximation?</p> <p>Regards,</p> <p>Steven </p>