We introduce a new computational method for embedding Lagrangian sink particles into an Eulerian calculation. Simulations of gravitational collapse or accretion generally produce regions whose density greatly exceeds the mean density in the simulation. These dense regions require extremely small time steps to maintain numerical stability. Smoothed particle hydrodynamics (SPH) codes approach thi...

We present a two-way coupling technique for simulating the complex interaction between hair and fluids. In our approach, the motion of hair and fluids is simulated by evaluating the hydrodynamic forces among them based on boundary handling techniques used in SPH (Smoothed Particle Hydrodynamics) fluids. When hair makes contact with fluids, water absorption inside the hair volume can be simulate...

The need for materials and process optimization in laser powder bed fusion (LPBF) goes hand with its numerical simulation capabilities. This work lays the groundwork developing an efficient predictive tool that can ultimately capture manufacturing defects 3D multi-layer LPBF simulations generate insights into possible ways to avoid or mitigate them. As a first step towards end, we present 2D fr...

In recent years, forest fires and maritime accidents have occurred frequently, which had a bad impact on human production life. Thus, the development of seaplanes is an increasingly urgent demand. It important to study taxiing process for seaplanes, strong nonlinear fluid-structure interaction problem. this paper, Smoothed Particle Hydrodynamics (SPH) method based Lagrangian framework utilized ...

Abstract The Smoothed Particle Hydrodynamics (SPH) method in the so-called weakly compressible variant (which mimics incompressibility conditions) is studied context of its resolving power vortical flows. It well known that conservative formulations SPH have serious problems to provide reasonably accurate solutions even simple flow cases. This deficiency additionally emphasized by fact are not ...

It is still difficult for traditional methods to simulate fluid-structure interaction (FSI) problems which are increasingly used to model cardiovascular system, and human organism. This contribution develops a new numerical method to analyze FSI, based on smoothed particle hydrodynamics (SPH). The Lagrangian and meshless characteristics of SPH presents distinct features to devise the method by ...

This paper presents an incompressible smoothed particle hydrodynamics (SPH) model to simulate wave propagation in a free surface flow. The Navier-Stokes equations are solved in a Lagrangian framework using a three-step fractional method. In the first step, a temporary velocity field is provided according to the relevant body forces. This velocity field is renewed in the second step to include t...

A multiphase extension of the δ-plus-SPH (smoothed particle hydrodynamics) model is developed for modeling non-Newtonian flow. modified numerical diffusive term and special shifting treatment near phase interface are introduced to original improve accuracy stability weakly incompressible SPH model. The Herschel–Bulkley used describe fluids. sub-particle added in momentum equation based on a lar...