Corrected Riemann smoothed particle hydrodynamics method for multi-resolution fluid–structure interaction DOI Creative Commons
Bo Zhang, Jianfeng Zhu, Xiangyu Hu

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

As a mesh-free method, smoothed particle hydrodynamics (SPH) has been widely used for modeling and simulating fluid–structure interaction (FSI) problems. While the kernel gradient correction (KGC) method is commonly applied in structural domains to enhance numerical consistency, high-order consistency corrections that preserve conservation remain underutilized fluid despite their critical role FSI analysis, especially multi-resolution scheme where solid are discretized with different spatial resolutions, along domain generally having lower resolution. In this study, we incorporate reverse KGC (RKGC) formulation, conservative approach which matrices each interacting pair ensure approximations, into discretization solving RKGC proven achieve exact second-order convergence relaxed particles improve accuracy while particularly enhancing energy free-surface flow simulations. By integrating Riemann SPH solve typical problems scheme, results consistently show improvements compared uncorrected discretization. Despite these advances, further refinement of techniques interfaces remains significant overall SPH-based simulation.

Language: Английский

Corrected Riemann smoothed particle hydrodynamics method for multi-resolution fluid–structure interaction DOI Creative Commons
Bo Zhang, Jianfeng Zhu, Xiangyu Hu

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

As a mesh-free method, smoothed particle hydrodynamics (SPH) has been widely used for modeling and simulating fluid–structure interaction (FSI) problems. While the kernel gradient correction (KGC) method is commonly applied in structural domains to enhance numerical consistency, high-order consistency corrections that preserve conservation remain underutilized fluid despite their critical role FSI analysis, especially multi-resolution scheme where solid are discretized with different spatial resolutions, along domain generally having lower resolution. In this study, we incorporate reverse KGC (RKGC) formulation, conservative approach which matrices each interacting pair ensure approximations, into discretization solving RKGC proven achieve exact second-order convergence relaxed particles improve accuracy while particularly enhancing energy free-surface flow simulations. By integrating Riemann SPH solve typical problems scheme, results consistently show improvements compared uncorrected discretization. Despite these advances, further refinement of techniques interfaces remains significant overall SPH-based simulation.

Language: Английский

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