Hello,
I am trying to simulate shear waves induced by acoustic radiation force using k-Wave toolbox as described in the article [1]. I am able to reproduce shear wave displacements profiles similar to the plots in Figures 5 & 6 of [1]. The displacement profiles obtained at different propagation distances (i.e. at different Ny indices) when stresses are given as input to the solver pstdElastic2D() as described in [1] are shown in the figure available at https://polybox.ethz.ch/index.php/s/ztlYYumUxqQBNgZ. However, I am curious to know the possible reasons behind obtaining negative displacements in k-Wave as shear wave displacements induced by acoustic radiation force are usually positive similar to the shear wave displacement profiles obtained from FEM simulation and analytical solution as shown in the Figure 3 of [1]. Please feel free to comment your intuitions and suggestions regarding this observation. Thank you.
[1] https://asa.scitation.org/doi/pdf/10.1121/2.0000398?class=pdf