Unphysical energy dissipation

Lazycatyi

Hi All,

When simulate wave propagation with SPH, one of the problem is the unphysical energy dissipation. I have tried many cases on this, one of the solution is to find a optimized smooth length. However sometimes it is not enough. Do you have other experiences on this?

Regards,

Yi

Alex

In our experince good wave propagation is only achieved for wave tanks of maximum 2-3 times the wavelenght and using high h/dp (coefh=1.2)

Regards

Lazycatyi

Thanks Alex. I've got another question.. In the version 3.2 is this a way to define a specify motion of an object as in the Sphysics, or I had to look into the code to generate the motion?

Thanks!

Lazycatyi

Never mind.. I've found it