http://www.k-wave.org/forum/topic/rayleigh-wave-simulation Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 20:26:04 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/rayleigh-wave-simulation#post-9001 Wed, 03 Jan 2024 19:40:51 +0000 masud407 9001@http://www.k-wave.org/forum/ <p>Hello,</p> <p>I was running a simulation for a liquid-solid layers (Scholte wave) using a linear transducer. Then, I want to run it for air-solid case (Rayleigh wave). I used the same parameters of Scholte wave case for the Rayleigh wave simulation. But, I changed the medium for air as follows:</p> <p>%define top layer_air<br /> cp1 = 331; % Longitudinal wave speed for tissue<br /> cs1 = 0; % shear wave speed<br /> rho1 = 1.29;<br /> alpha0_p1 = 0.00; % absorption coefficient for water<br /> alpha0_s1 = 0.00;</p> <p>Also, for better stability, I changed the cfl to 0.05 from 0.1. t_end was chosen based on the distance and wave speed at each medium. I used the transducer.focus_distance = 15 mm (interface of air and solid). Interestingly, I found the maximum intensity at 25 mm (not at 15 mm where the focus is) after the fluid simulation. The same simulation I ran for water properties which was perfectly fine (focused at defined focus distance). </p> <p>Can anyone please tell me why the focus distance has been changed for the Rayleigh wave case? </p>