k-Wave

1. alan.keenan
   

   Member
   Joined: Oct '20
   Posts: 2

   I am using the Bernstein and Spicer equations for shear wave acoustic field calculations due to pulsed laser excitation in the non ablative regime.
   D_S = - s_T ^ 4 * cos(2 * theta) .* sin(2 * theta) ./ ...
   (s_T ^ 4 * (1 - 2 * cos(theta) .^ 2) .^ 2 + 4 * s_T ^ 3 .* cos(theta) .^ 2 .* sin(theta) .* sqrt(s_L ^ 2 - (s_T * cos(theta)) .^ 2));
   Beam spreading is present in the resulting images, however, there is no acoustic attenuation with distance. Is it possible to introduce a function that will attenuate the acoustic field with distance? The material model is aluminium.

   Posted 2 years ago #

2. bencox
   

   Developer
   Joined: Mar '10
   Posts: 285

   Hi alan,

   Which simulation function are you using? In pstdElastic3D you can set the absorption using medium.alpha_coeff_compression and medium.alpha_coeff_shear.

   Best wishes
   Ben

   Posted 1 year ago #

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