Study on SPH Viscosity Term Formulations
AbstractFor viscosity-dominated flows, the viscous effect plays a much more important role. Since the viscosity term in SPH-governing (Smoothed Particle Hydrodynamics) equations involves the discretization of a second-order derivative, its treatment could be much more challenging than that of a first-order derivative, such as the pressure gradient. The present paper summarizes a series of improved methods for modeling the second-order viscosity force term. By using a benchmark patch test, the numerical accuracy and efficiency of different approaches are evaluated under both uniform and non-uniform particle configurations. Then these viscosity force models are used to compute a documented lid-driven cavity flow and its interaction with a cylinder, from which the most recommended viscosity term formulation has been identified. View Full-Text
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Zheng, X.; Ma, Q.; Shao, S. Study on SPH Viscosity Term Formulations. Appl. Sci. 2018, 8, 249.
Zheng X, Ma Q, Shao S. Study on SPH Viscosity Term Formulations. Applied Sciences. 2018; 8(2):249.Chicago/Turabian Style
Zheng, Xing; Ma, Qingwei; Shao, Songdong. 2018. "Study on SPH Viscosity Term Formulations." Appl. Sci. 8, no. 2: 249.
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