Hi,

I am doing FEM simulations for nonlinear acoustic effects and trying to compare with k-wave. So far it works fairly well. One of the drawbacks about FEM approach is that it generally needs very fine mesh to get the right result. The FEM program I use recommends at 16 points per ultrasound wavelength, which creates a huge model for 3D problems. Nonlinear simulations have to even go beyond.

Does K-wave have this limitation? My (shallow) understanding is K-wave is based on finite difference method and finite difference method is affected by mesh density a lot. Is this true?

Thanks a lot!

Bo