首页|Unified Pressure, Surface Tension and Friction for SPH Fluids
Unified Pressure, Surface Tension and Friction for SPH Fluids
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NETL
NSTL
Assoc Computing Machinery
Fluid droplets behave significantly different from larger fluid bodies. Atsmaller scales, surface tension and friction between fluids and the boundaryplay an essential role and are even able to counteract gravitationalforces. There are quite a few existing approaches that model surface tensionforces within an SPH environment. However, as often as not, physicalcorrectness and simulation stability are still major concerns with manysurface tension formulations.We propose a new approach to compute surface tension that is both robust and produces the right amount of surfacetension.Conversely, less attention was given to friction forces at the fluidboundaryinterface. Recent experimental research indicates that Coulombfriction can be used to describe the behavior of droplets resting on a slope.Motivated by this, we develop a novel friction force formulation at thefluid-boundary interface following the Coulomb model, which allows usto replicate a new range of well known fluid behavior such as the motionof rain droplets on a window pane.Both forces are combined with an IISPH variant into one unified solverthat is able to simultaneously compute strongly coupled surface tension,friction and pressure forces.
NETL
NSTL
Assoc Computing Machinery
