نتایج جستجو برای: smoothed particle hydrodynamics sph

تعداد نتایج: 202233  

2015
Alaa A. Olleak Mohamed N.A. Nasr Hassan A. El-Hofy

Over the past few decades, there has been a growing interest in modelling of machining processes. In this regard, smoothed particle hydrodynamics (SPH) is one of the latest methods used for that purpose. SPH is a powerful technique that can be used in handling problems of large deformation that are difficult to be tackled using traditional finite element methods. The current work aims to presen...

2013
Daming Li Zhichao Wang Yanqin Li Yangyang Li Mingyu Zhao

To supervise and control the whole simulation of Smoothed Particle Hydrodynamics (SPH) model, a mixed language programming (MLP) method is particularly described that will not only take advantages of the Fortran’s strong computing power but also give full play to the Visual Basic’s (VB) flexible interface design and visualization capabilities. Then, a VBF SPH model with Model Monitoring Technol...

Journal: :Technology and health care : official journal of the European Society for Engineering and Medicine 2004
Matthias Müller Simon Schirm Matthias Teschner

In this paper, we propose an interactive method based on Smoothed Particle Hydrodynamics (SPH) to simulate blood as a fluid with free surfaces. While SPH was originally designed to simulate astronomical objects, we gear the method towards fluid simulation by deriving the force density fields directly from the Navier-Stokes equation and by adding a term to model surface tension effects. In contr...

2012
Prabhu Ramachandran Chandrashekhar Kaushik

[PySPH] is a Python-based open source parallel framework for Smoothed Particle Hydrodynamics (SPH) simulations. It is distributed under a BSD license. The performance critical parts are implemented in [Cython]. The framework provides a load balanced, parallel execution of solvers. It is designed to be easy to extend. In this paper we describe the architecture of PySPH and how it can be used. At...

2012
Jaan Hui Pu Songdong Shao

This research paper presents an incompressible smoothed particle hydrodynamics (ISPH) technique to investigate a regular wave overtopping on the coastal structure of different types. The SPH method is a mesh-free particle modeling approach that can efficiently treat the large deformation of free surface. The incompressible SPH approach employs a true hydrodynamic formulation to solve the fluid ...

2004
Christoph Schäfer Roland Speith Michael Hipp

We have performed Smoothed Particle Hydrodynamics (SPH) simulations to study the time evolution of one and two protoplanets embedded in a protoplanetary accretion disc. We investigate accretion and migration rates of a single protoplanet depending on several parameters of the protoplanetary disc, mainly viscosity and scale height. Additionally, we consider the influence of a second protoplanet ...

2010
Emily M. Ryan Alexandre M. Tartakovsky Cristina Amon

In this paper we investigate the accuracy of a Darcy-scale model for competitive adsorption in a porous medium through comparison with a smoothed particle hydrodynamics (SPH) pore-scale model. SPH is a Lagrangian, particle based modeling method which uses the particles as interpolation points to directly discretize the governing equations of the system. The models consider a binary system of co...

2004
A. P. Boss

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...

Journal: :J. Comput. Physics 2011
S. Majid Hosseini James J. Feng

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....

Journal: :IOP conference series 2023

Abstract The hydrodynamics field continues to be interested in one of the classic free surface flow problems, propagation water waves. In this paper, long-distance wave is investigated using smoothed particle (SPH). One mesh-free, Lagrangian approaches SPH. study’s goal derive a set parameters appropriate for large tank. A 24.6 m gauge was placed front piston wavemaker, which used replicate reg...

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