http://www.k-wave.org/forum/topic/volume-rate-of-heat-deposition-units Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 22:33:22 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/volume-rate-of-heat-deposition-units#post-8720 Wed, 08 Mar 2023 14:47:44 +0000 bencox 8720@http://www.k-wave.org/forum/ <p>Hi Ishmael111, </p> <p>Looks as though you have an extra t in there. Should be units of power per unit volume.</p> <p>Best wishes<br /> Ben </p> http://www.k-wave.org/forum/topic/volume-rate-of-heat-deposition-units#post-8695 Sun, 15 Jan 2023 08:10:41 +0000 Ishmael111 8695@http://www.k-wave.org/forum/ <p>I also would like to thank for this wonderful tool!</p> <p>And I also can't figure out what units of volume heat deposition in this example.</p> <p>It is calculated by formula "Q = alpha_np .* p.^2 ./ (medium.density .* medium.sound_speed);"<br /> where [alpha_np] = Np/m, [p] = Pa, [medium.density] = kg/m^3, [medium.sound_speed] = m/s<br /> And above combination of these units gives us units of Q as [Wt/m^3].</p> <p>What am I missing?</p> <p>Thanks in advance for answer! </p> http://www.k-wave.org/forum/topic/volume-rate-of-heat-deposition-units#post-6926 Tue, 25 Jun 2019 20:41:54 +0000 Bradley Treeby 6926@http://www.k-wave.org/forum/ <p>The simulation is in 2D, so the units should be in W/m^2 or kW/cm^2. So the conversion is correct, but the colour bar label is wrong. We’ll fix this for the next release - thanks for posting. </p> http://www.k-wave.org/forum/topic/volume-rate-of-heat-deposition-units#post-6925 Tue, 25 Jun 2019 19:09:51 +0000 alcebrui 6925@http://www.k-wave.org/forum/ <p>First of all, thanks a lot for this amazing tool, it is really powerful and intuitive!</p> <p>My question is regarding the units shown for the volume rate of heat deposition in the plot of the example "Heating by a focused ultrasound transducer". In subplot 232, the y label indicates kW/cm^3 and in the corresponding code the variable for the volume rate of heat deposition is multiplied by a factor 1e-7, i.e., Q * 1e-7. Looking into the documentation Q is supposed to be in S.I units (W/m^3), so I would expect to have Q * 1e-9 if the desired units are kW/cm^3. Am I missing something there?</p> <p>Thanks! </p>