Incompressible smoothed particle hydrodynamics-moving IRBFN method for viscous flow problems. (October 2015)

• Record Type: Journal Article
• Authors: Ngo-Cong, D.; Tran, C.-D.; Mai-Duy, N.; Tran-Cong, T.
• Is Part Of: Engineering analysis with boundary elements. Volume 59(2015:Oct.)
• Page Start: 172
• Page End: 186
• Publication Date: 2015-10
• Subjects: Smoothed particle hydrodynamics -- Incompressible -- Integrated radial -- Basis function -- Moving least square -- Viscous flow -- Moving boundary; Boundary element methods -- Periodicals; Engineering mathematics -- Periodicals; Équations intégrales de frontière, Méthodes des -- Périodiques; Mathématiques de l'ingénieur -- Périodiques; Boundary element methods; Engineering mathematics; Periodicals; 620.00151
• DOI: 10.1016/j.enganabound.2015.06.006
• Languages: English
• ISSNs: 0955-7997

Abstract

Abstract: We propose a novel numerical approach based on incompressible smoothed particle hydrodynamics and moving integrated radial basis function networks method, namely ISPH-MIRBFN, for solving incompressible viscous flow problems. In the ISPH method, the pressure is acquired from solving Poisson equation. In the present approach, the pressure Poisson equation is solved on a set of MIRBFN nodal points and the obtained results are then transferred to the SPH particles. The performance of the present method is investigated through several numerical examples including spin-down vortex, flows in a lid-driven closed-cavity and a lid-driven open-cavity with a prescribed bottom wall motion. Numerical results show that the proposed method reduces the spurious pressure fluctuations, yields a smoother pressure-field solution and maintains the computational efficiency when compared to the ISPH.