On different calculation formulas of the pressure term in bi-phase SPH simulations
Source abstract
Abstract
The smoothed particle hydrodynamics (SPH) method is usually expected to be an efficient numerical tool for calculating the multiphase phenomena in compressors. However, numerical instability arises around the interfaces due to the pressure inconsistency. By analyzing different formula of the pressure term under SPH approximation, we show that the frequently-used formulation (n=-1) leads to the worst performance and is thus not recommended. By contrast, we suggest the formulas n=0 and 1 in future practical SPH applications.
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Research context
OpenAlex topics: Fluid Dynamics Simulations and Interactions · Fluid Dynamics and Heat Transfer · Lattice Boltzmann Simulation Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
LMP, Ecole Centrale de Pékin, Beihang University 1 , Beijing 100191, China
LaMCoS, Institut National des Sciences Appliquées de Lyon 2 , 69621 Villeurbanne, France
Funding
National Natural Science Foundation of China
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