I am carrying out simulations using Smoothed particle hydrodynamics, in which the domain is meshed as particles distributed over it. What should be the volume of the particles in comparison to the domain volume. For instance, if we have cubical specimen of certain volume which contains n number of spherical particles each of radius r, then how to decide the radius (or volume) of each of the particle.
Thanks and Regards.
I would suggest a mesh refinement study. Start with a small number of particles and measure some variable you are interested in (stress, strain, etc). Then increase the number of particles and measure the same variable again. Repeat this process until you no longer see significant changes in the measured variable.
You can plot this process with the number of particles as the x axis and the measured variable as the y axis.
I also realize that SPH doesn't have a mesh, but mesh refinement is a common term for this process, since it's usually used for FEM.
@George Stubblefield, That is fine. Even if I take a small number, what should be the volume of individual particle?
With each mesh, I think the particle diameter should be chosen such that neighboring particles are touching each other.
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