We analyse the performance of twelve different implementations of Smoothed Particle Hydrodynamics (SPH) using seven tests designed to isolate key hydrodynamic elements of cosmological simulations which are known to cause the SPH algorithm problems. In order, we consider a shock tube, spherical adiabatic collapse, cooling flow model, drag, a cosmological simulation, rotating cloud-collapse and d...

Masonry arch bridges form an essential part of existing transport infrastructure around the world, including mainland Europe and northeastern US. Recent extreme flood events highlight that masonry spanning watercourses are vulnerable to flood-induced hydrodynamic debris impact loads. When flow interacts with bridge superstructure, or without discrete floating debris, a complex interaction is ob...

In this paper we show how a Lagrangian variational principle can be used to derive the Smoothed Particle Magnetohydrodynamics (SPMHD) equations for ideal Magnetohydrodynamics (MHD). We also consider the effect of a variable smoothing length in the Smoothed Particle Hydrodynamics (SPH) kernels, after which we demonstrate by numerical tests that the consistent treatment of terms relating to the g...

In this paper we discuss the treatment of discontinuities in Smoothed Particle Hydrodynamics (SPH) simulations. In particular we discuss the difference between integral and differential representations of the fluid equations in an SPH context and how this relates to the formulation of dissipative terms for the capture of shocks and other discontinuities. This has important implications for many...

Abstract Flow-like landslides are a serious geologic hazard that can cause life and property loss all over the world. Mudflow is kind of debris flow has been classified as non-Newtonian flow. The Smoothed particle hydrodynamics method (SPH) powerful tool for modeling fluids, such debris/mudflows, which be described in terms local interactions their constituent parts. In this paper, Herschel-Buc...

In this paper we present two enhanced variants of the smoothed particle hydrodynamics (SPH) method for the numerical simulation of free surface flows of viscous fluids. Improvements are achieved by deriving a new set of general discrete SPH-like equations under an energy-based framework and applying a corrected (high-order) or coupled particle approximation scheme for function derivatives. By d...

The top-mounted pitching point absorber is one of the most promising wave energy converters in that it can be easily attached to an existing offshore structure. However, difficult predict accurately its conversion performance because strongly nonlinear hydrodynamic behaviour. Herein, smoothed particle hydrodynamics (SPH) used solve this wave-structure interaction problem. SPH method first valid...

The Support Architecture for Large-Scale Subsurface Analysis (SALSSA) provides an extensible framework, sophisticated graphical user interface (GUI), and underlying data management system that simplifies the process of running subsurface models, tracking provenance information, and analyzing the model results. The SALSSA software framework is currently being applied to validating the Smoothed P...

To study the resolution required for simulating gravitational fragmentation with newly developed Lagrangian hydrodynamic schemes, Meshless Finite Volume method (MFV) and Mass (MFM), we have performed a number of simulations Jeans test compared results both expected analytic solution from more standard approach: Smoothed Particle Hydrodynamics (SPH). We find that different schemes converge to wh...

The study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. Therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. In this study, the propagation of static ...