Shoud I change the model size due to the 1.5*h gap?

daye_yang

Hi all,
I simulated a water entry problem with DualSPHysics. But I noticed that a small gap between fluid and boundary particles always occured, especially when the particle distance is large. After reading User Guide, it said 1.5*h is set between fluid and boundary particles. I'm confused that when I build the geometric model, should I shrink or enlarge the model's boundary size with 1.5*h in order to fit the exact size of my original model?
Thank you very much!
Daye

Alex

We indicate that the size of the gap is 1.5*h just in case you want to compute sthg at the boundary wall... since the computation should be done 1.5*h far from the wall in order to have the fluid domain in the vicinity of the kernel

Regards