A block-based adaptive particle refinement SPH method for fluid–structure interaction problems

Gao, Tianrun; Qiu, Huihe; Fu, Lin

doi:10.1016/j.cma.2022.115356

Cited by 13 publications

(2 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, it is evident that the conventional approach of using fixed values of the smoothing length ratio can only refine the particle spacing and smoothing length at the same rate contrary to the suggestion by Rasio [21]. Novel adaptive particle refinement methodologies have been continuously implemented in SPH [42][43][44], including dynamic smoothing length sizing to resolved complex flow kinematics at certain zones of the domain. However, adaptive refinement schemes for SPH are challenging to implement due to complexity as well as being only recently successful at leveraging GPU computing power [45].…”

Section: Introductionmentioning

confidence: 99%

“…Validation for the dam break case is found in the existing experimental data in the literature, while an in-house laser Doppler velocimetry (LDV) has been used to obtain validation data for the rotating drum case. Length scale parameters and theoretical convergence quantification were determined by following the Richardson extrapolation (RE) procedure proposed by the American Society of Mechanical Engineering (ASME) [44], which has been widely utilised in conventional CFD studies. To also assess the applicability of the two refinement strategies for the larger engineering community, a standard SPH implementation of the widely available open-source code DualSPHysics has been utilised.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploration of Two Different Length Scale Refinement Strategies on the Application of SPH Simulations on 3D Free-surface Flows

Tran,

Roberts,

Hastie

2024

Preprint

View full text Add to dashboard Cite

A length scale refinement study is a standard practice to ensure the independence of a numerical model on spatial approximations. For smoothed particle hydrodynamics (SPH), the process of length scale refinement study tends to be conducted based on experience. A challenge of defining a universal length scale refinement strategy is the existence of two length scales – particle spacing and smoothing length. Despite the challenge, further investigations of the impact of different refinement strategies should be continually conducted to improve the reliability of practical SPH applications on 3D free-surface flows. In this study, a conventional strategy and a novel coupled refinement strategy are used to investigate the convergence of SPH simulations for free-surface flows using a standard SPH scheme available in an open-source framework. The two case studies are a dam break flow and a lesser-known stable regime water flow inside a rotating drum with lifters. Validations are conducted using existing literature data for the dam break flow and laser Doppler velocimetry (LDV) measurements for the rotating drum flow. The investigation shows that the proposed coupled length scale refinement strategy does not offer a significant improvement for the SPH model of the dam break flow comparing to the conventional strategy. On the other hand, the stable regime rotating drum fluid flow shows that both refinement strategies are not sufficient to tackle SPH’s on-going fundamental challenge of accurately predicting the flow field of complex 3D turbulent flows with free surfaces.

show abstract