SPH simulation of two-phase flow with and without mixability

Опубликовано: 25 Март 2026
на канале: Velryphon
1,873
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Simulation on top uses mixable fluids.
Simulation on bottom uses unmixable fluids.

Mixability is modeled by not restricting surface tension to same phase particles.

This simulation uses a new simple surface tension scheme that yields to zero clustering yet cohesive behaviour producing drops and filaments. It also uses a new fully stable viscosity scheme that cannot produce unpredicted instability when using very high viscosity factor.

Average particle number = 34084
Averag surface = 0.11
Average density variation = 7%

Space resolution = 0.0020m
Time resolution = 0.0003s
Interaction radius = 0.0080m

Properties n.1
--------------1
Incompressibility = 5000
Surface tension = 20
Viscosity = 0.05
Density = 1.0

Properties n.2
--------------2
Incompressibility = 5000
Surface tension = 20
Viscosity = 0.05
Density = 0.8

Performance = 0.09spf - 0.09fps

Speed rate = 0.20x
Simulation time = 6s

Processing time = 27m 18s
Computed frames = 17998
Video time = 30s