Dependency of "Compute Force" on Mass Values

barrybarry
in DualSPHysics v5.2

Hi all,


I was wondering how the force on static boundary is related to the mass values of the boundary/fluid particles.

As “F=m*\simga dv/dt”, it seems that "m" matters but I guess “dv/dt” is also related to "m".

My question is then, does it matter which value we set to our fluid particles or static boundary particles? Will that change the reaction force on the structure? And what value is the automatic value that DualSPHysics use?


Thanks!

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