Recent calculations with a two-fluid smoothed particle hydrodynamics (SPH) code of the collapse of a magnetized dense core have found little evidence for fragmentation. These calculations have been interpreted as implying that magnetic braking by magnetic tension forces is sufficient to inhibit fragmentation, contrary to a suggestion by Boss that magnetic fields might encourage fragmentation. H...

Abstract In Smoothed Particle Hydrodynamics (SPH) methods for fluid flow, incompressibility may be imposed by a projection method with an artificial homogeneous Neumann boundary condition for the pressure Poisson equation. This is often inconsistent with physical conditions at solid walls and inflow and outflow boundaries. For this reason open-boundary flows have rarely been computed using SPH....

The penetration of projectiles into targets has a broad background in engineering. In this work, numerical simulations the projectile-target problem are conducted using Finite Element Method (FEM), Smoothed Particle Hydrodynamics (SPH) and Element–Smoothed Adaptive Coupling (FE-SPH ACM) based on LS-DYNA software package. First, experiments aluminum ceramic simulated. experimental simulation res...

Meshfree particle method, which is always regarded as a pure Lagrangian approach, is easily represented complicated domain topologies, moving boundaries, and multiphase media. Solving acoustic problems with the mesfree particle method forms a branch of the acoustic wave modeling field, namely, particle-based computational acoustics (PCA). The aim of this paper is to improve the accuracy of usin...

A variety of particle-based methods have been developed for the purpose computationally modelling processes that involve, example, complex topological changes interfaces, significant plastic deformation materials, fluid flow in conjunction with heat transfer and phase transformation, porous media, granular flow, etc. Being different from conventional directly solve related governing equations u...

By comparing a collisionless cosmological N-body simulation (DM) to a smoothed particle hydrodynamics simulation (SPH) with the same initial conditions, we investigate the correspondence between the dark matter subhalos produced by collisionless dynamics and the galaxies produced by dissipative gas dynamics in a dark matter background. When galaxies in the SPH simulation fall into larger groups...

Abstract Sloshing describes liquids motion in the semi-filled tanks, and exerts dynamic loading on its walls. This effect is of great importance in a number of dynamic systems e.g. aerospace vehicles, road tankers, liquefied natural gas carriers, elevated water towers and petroleum cylindrical tanks. Pressures insert impacts which are important for structural strength evaluation and its co...

We present results from a series of cosmological SPH (smoothed particle hydrodynamics) simulations coupled with the PM (Particle–Particle–Particle–Mesh) solver for the gravitational force. The simulations are designed to predict the statistical properties of X-ray clusters of galaxies as well as to study the formation of galaxies. We have seven simulation runs with different assumptions on the ...

on SPH to simulate three-dimensional invasion of nonwetting and wetting fluids in fracture apertures with Smoothed particle hydrodynamics (SPH) models were used to complex geometries. Such complex processes are very simulate unsaturated flow in fractures with complex geometries. The SPH is a fully Lagrangian particle-based method that allows the dydifficult to model with traditional grid-based ...

An asteroid impact can potentially destroy life on this planet. Therefore, asteroids should be prevented from impacting the Earth to impede severe disasters. Nuclear explosions are currently only option prevent an incoming when is large or warning time short. However, exist in absolute vacuum, where explosion energy propagation mechanism differs that air environment. It difficult describe proce...