In this article, we present an improved solid boundary treatment formulation for the smoothed particle hydrodynamics (SPH) method. Benchmark simulations using previously reported boundary treatments can suffer from particle penetration and may produce results that numerically blow up near solid boundaries. As well, current SPH boundary approaches do not properly treat curved boundaries in compl...

New SPH equations including fully variable smoothing length aspects and its implementation are proposed in this paper. Unlike the existing adaptive kernel SPH method, the fully variable smoothing lengths effects have been considered essentially in the scheme based on the adaptive symmetrical kernel estimation. Among the new equations, the evolution equation of density is derived in essence, it ...

The focus of the research activity is on the Smoothed Particle Hydrodynamics (SPH) method and its applications to environmental flow problems. The purpose is to model fully three-dimensional non-hydrostatic free surface flows and impact problems with the SPH method applying it to inviscid and viscous fluids. After a thorough literature review of the SPH method, the research work is divided up i...

We present a brief introduction to Smoothed Particle Hydrodynamics SPH where we focus on an approach to treat the physical viscosity Additionally we describe in detail the basic principles of our parallel implementation of the SPH method In the second part we summarise some results of test simulations performed to achieve general features of the method and we end discussing some astrophysical a...

  Background: Health status is an individual’s relative level of wellness and illness. Self-Perceived Health (SPH) is a single item considered as a health indicator for national and international survey. The aim of this study was to evaluate the SPH measure and its determinants in a National sample of Iranian children and adolescents.   Materials and Methods:  This National study was performed...

An incompressible multi-phase SPH method is proposed. In this method, a fractional time-step method is introduced to enforce both the zero-density-variation condition and the velocity-divergence-free condition at each full time step. To obtain sharp density and viscosity discontinuities in an incompressible multi-phase flow a new multi-phase projection formulation, in which the discretized grad...

Finite element methods (FEM) are generally used in cardiac 3D-electromechanical modeling. For FEM modeling, a step of a suitable mesh construction is required, which is non-trivial and time-consuming for complex geometries. A meshless method is proposed to avoid meshing. The smoothed particle hydrodynamics (SPH) method was used to solve an electrophysiological model on a left ventricle extracte...