Foreword: SPH for free-surface flows

Gesteira, Moncho Gómez; Rogers, Benedict D.; Violeau, Damien; Grassa, José María; Crespo, A. J. C.

doi:10.1080/00221686.2010.9641241

Cited by 10 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The numerical models could also provide an alternative and valuable tool of scientific investigation, providing additional information that cannot be easily obtained from direct experimental observation (Gomez-Gesteira et al, 2010), such as pressure and velocity. In addition, if different engineered (structural and nonstructural) options are also taken into account to reduce the impact of disasters, the economic benefits of this form of risk mitigation can include a reduction in the costs incurred by the organizations responsible for managing disaster events and recovery processes (MAFF, 1999;Defra, 2003;Albano et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, SPH is generally more time-consuming than Eulerian CFD techniques since the numerical stencil of each computational node is composed of approximately one hundred particles in 3D, rather than a tenth of cells for mesh-based models (Viccione et al, 2008). Still, the algorithm is appropriate for parallelization, noticeably reducing the negative effects of this shortcoming (Gomez-Gesteira et al, 2010;Violeau, 2012). Conceptually, the method uses integral theory to transform the partial differential equations into an integral form.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

Albano

Sole

Mirauda

et al. 2016

Journal of Hydrology

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

Albano

Sole

Mirauda

et al. 2016

Journal of Hydrology

View full text Add to dashboard Cite

“…Although extensive literature regarding simulating OEDs using the SPH method was published during the past decades, to the best knowledge of the authors, it still lacks an effort dedicated to providing a detailed review of this field. Note that although several reviews have been focused on the SPH applications towards coastal and ocean engineering (see, e.g., [66,67]), free-surface flows (see, e.g., [68][69][70][71][72]), multiphase flows (see e.g., [73]), FSI problems (see, e.g., [74][75][76][77]), and diverse industrial applications (see, e.g., [78][79][80][81][82][83]), these works paid little attention to OEDs, for which several hydrodynamic problems are quite different from traditional nearshore/offshore structures and thereby deserve energy engineers and SPH practitioners' attention. Therefore, in contrast to the previous reviews, this study aimed at offering the state-of-the-art progress with regard to various advanced SPH techniques in the hydrodynamic predictions of OEDs towards industrial applications, and the attention of the present work is particularly focused on the following topics (see Figure 4 for more details) 1.…”

Section: Computational Efficiencymentioning

confidence: 99%

A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

et al. 2022

View full text Add to dashboard Cite

This article is dedicated to providing a detailed review concerning the SPH-based hydrodynamic simulations for ocean energy devices (OEDs). Attention is particularly focused on three topics that are tightly related to the concerning field, covering (1) SPH-based numerical fluid tanks, (2) multi-physics SPH techniques towards simulating OEDs, and finally (3) computational efficiency and capacity. In addition, the striking challenges of the SPH method with respect to simulating OEDs are elaborated, and the future prospects of the SPH method for the concerning topics are also provided.

show abstract

“…Referring back to the reported SPH simulation results in literature, one may argue that there is still no consensus in the SPH community on WCSPH being as accurate as the ISPH method. Therefore, the necessity of further comparisons of both methodologies to enforce the incompressibility condition is obvious, which is also acknowledged in [28]. To shed further light on the current understanding of the performance of both methodologies, an improved SPH algorithm for both WCSPH and ISPH approaches is proposed and implemented.…”

Section: Introductionmentioning

confidence: 99%

A robust weakly compressible SPH method and its comparison with an incompressible SPH

Shadloo

Zainali

Yıldız

et al. 2011

Numerical Meth Engineering

159

View full text Add to dashboard Cite

This paper presents a comparative study for the weakly compressible (WCSPH) and incompressible (ISPH) smoothed particle hydrodynamics methods by providing numerical solutions for fluid flows over an airfoil and a square obstacle. Improved WCSPH and ISPH techniques are used to solve these two bluff body flow problems. It is shown that both approaches can handle complex geometries using the multiple boundary tangents (MBT) method, and eliminate particle clustering-induced instabilities with the implementation of a particle fracture repair procedure as well as the corrected SPH discretization scheme. WCSPH and ISPH simulation results are compared and validated with those of a finite element method (FEM). The quantitative comparisons of WCSPH, ISPH and FEM results in terms of Strouhal number for the square obstacle test case, and the pressure envelope, surface traction forces, and velocity gradients on the airfoil boundaries as well as the lift and drag values for the airfoil geometry indicate that the WCSPH method with the suggested implementation produces numerical results as accurate and reliable as those of the ISPH and FEM methods.transfer problems [11], among others. In this method, rather than using an Eulerian fixed mesh, the computational domain is represented by a set of particles that are allowed to move in accordance with the solutions of relevant governing and constitutive equations. In fact, here, the term particle merely refers to a movable point that is bestowed with relevant physical and hydrodynamic transport properties such as temperature, density, viscosity and so forth. The Lagrangian nature of SPH lends itself remarkably to the simulation of a variety of complex fluid flow processes such as flow around bluff-bodies.In the SPH literature, there are two commonly utilized approaches for solving the balance of the linear momentum equations; namely the Incompressible SPH (ISPH), and the Weakly Compressible SPH (WCSPH) methods.The ISPH technique is based on the projection method originally proposed in [12,13] and first implemented to the SPH method in the work of Cummins and Rudman [14], which is referred to as the standard projection method in this work. In this method, the pressure term in the momentum balance equation is computed by solving a pressure Poisson's equation. The standard projection method has been reported to suffer from the density error accumulation during the computation of the intermediate density field [15,16]. To circumvent this and the associated problems, and consequently enhance the accuracy and the performance of the standard ISPH scheme, several modifications have been proposed for it in literature. For example, Shao and Lo [15] enforced the incompressibility in a somewhat similar manner to the one proposed in [14] with two main differences: first, they computed the intermediate velocity and then advected SPH particles; and second, they utilized the density variation as a source term rather than the divergence of the intermediate velocity. Their projection scheme has been re...

show abstract

Foreword: SPH for free-surface flows

Cited by 10 publications

References 20 publications

Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model

A Review of SPH Techniques for Hydrodynamic Simulations of Ocean Energy Devices

A robust weakly compressible SPH method and its comparison with an incompressible SPH

Contact Info

Product

Resources

About