A new approach in Smoothed Particle Hydrodynamics to simulate hydraulically induced deformation processes in Geomechanics

2017 ◽  
Author(s):  
Maziar Gholami Korzani
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
New Approach ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Deformation Processes

scholarly journals SPH MODEL TO SIMULATE MOVEMENT OF GRASS MEADOW OF POSIDONIA UNDER WAVES

2012 ◽  
Vol 1 (33) ◽  
pp. 56 ◽  
Author(s):  
Philippe Larroude ◽  
Thibault Oudart
Keyword(s):  
Coefficient Of Friction ◽  
Smoothed Particle Hydrodynamics ◽  
Direct Interaction ◽  
Computation Time ◽  
New Approach ◽  
Particle Hydrodynamics ◽  
Sph Model ◽  
Smoothed Particle ◽  
Grass Meadow

The objective of this paper is to try a new approach to simulate the interactions between waves and algae. The chosen method is to simulate waves and plants through SPH (Smoothed Particle Hydrodynamics, SPH). In this model, the algae are defined as a solid that respects Hook's law, which is in direct interaction with the fluid part. Given the properties of this method especially in terms of computation time, the dimensions of the simulations are limited. A successful representation of the movement of algae under waves or/and current by SPH will permit the determination of coefficient of friction corresponding to a type of algae, that can be used in a different larger scale code.

scholarly journals Study on Particle Inconsistency Problem in Smoothed Particle Hydrodynamics

2011 ◽  
Vol 94-96 ◽  
pp. 1638-1641 ◽  
Author(s):  
Gui Ming Rong ◽  
Hiroyuki Kisu
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Particle Method ◽  
Second Derivative ◽  
Sph Method ◽  
New Approach ◽  
First Derivative ◽  
Numerical Studies ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Finite Particle

In the smoothed particle hydrodynamics (SPH) method, the particle inconsistency problem significantly influences the calculation accuracy. In the present study, we investigate primarily the influence of the particle inconsistency on the first derivative of field functions and discuss the behavior of several methods of addressing this problem. In addition, we propose a new approach by which to compensate for this problem, especially for functions having a non-zero second derivative, that is less computational demanding, as compared to the finite particle method (FPM). A series of numerical studies have been carried out to verify the performance of the new approach.

Numerical Simulation of Severe Plastic Deformation of Titanium Specimens under Dynamic Channel Pressing

2014 ◽  
Vol 1040 ◽  
pp. 107-112 ◽  
Author(s):  
Vladimir A. Krasnoveikin ◽  
Vladimir Skripnyak ◽  
Alexander A. Kozulin ◽  
Olga Senatova
Keyword(s):  
Numerical Simulation ◽  
Smoothed Particle Hydrodynamics ◽  
High Speed ◽  
Angular Pressing ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamics Method ◽  
Deformation Processes ◽  
Dynamic Channel ◽  
Dynamic Pressing

Deformation processes of the α-titanium specimens moving through the channels of the die for two loading schemes: equal channel angular pressing (ECAP) and channel pressing through the channel of variable form (CVF) are investigated. Schemes of dynamic pressing in case the block is extruded at high speed through the channel of the die due to the pressure of the punch or the pressure of powder gases were analyzed. The problem is solved by the smoothed particle hydrodynamics method (SPH) within the framework of elastoplastic continuum.

On the Use of Meshless Methods in Acoustic Simulations

2009 ◽  
Author(s):  
Philipp Hahn ◽  
Dan Negrut
Keyword(s):  
Finite Element Method ◽  
Smoothed Particle Hydrodynamics ◽  
Sound Propagation ◽  
Moving Boundaries ◽  
Simulation Methods ◽  
New Approach ◽  
Finite Differences Method ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Element Method

In this paper, we are investigating the potential and limits of a meshless Lagrangian technique, called Smoothed Particle Hydrodynamics (SPH), as a method for acoustic simulations. Currently the most common techniques for acoustic simulations draw on mesh-based methods such as the Boundary Element Method (BEM), Finite Differences Method (FD) and Finite Element Method (FEM). Though many improvements have been made to each class of methods during the last few years, they still have their weaknesses. Difficulties arise as soon as inhomogeneous media, moving boundaries or aeroacoustic effects are involved. These problems are either particularly hard to describe or cannot be simulated with some of these mesh-based methods. The investigation of SPH for modeling sound propagation is carried out in order to assess its potential in relation to the limitations associated with the existing simulation methods listed above. Simple computational experiments will be carried out for the verification of the new approach and applications on the problems listed above will be discussed.

Sign in / Sign up

Export Citation Format

Share Document