scholarly journals Finite-time Lyapunov Exponent analysis used on a free-surface flow problem solved by Smoothed Particle Hydrodynamics

2021 ◽  
Author(s):  
Petr Jančík ◽  
Tomáš Hyhlík
Keyword(s):  
Free Surface ◽  
Lyapunov Exponent ◽  
Smoothed Particle Hydrodynamics ◽  
Finite Time ◽  
Flow Problem ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Finite Time Lyapunov Exponent ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

scholarly journals Numerical modeling of free surface flow in hydraulic structures using Smoothed Particle Hydrodynamics

2016 ◽  
Vol 40 (23-24) ◽  
pp. 9821-9834 ◽  
Author(s):  
Mahdiyar Khanpour ◽  
Amir Reza Zarrati ◽  
Morteza Kolahdoozan ◽  
Ahmad Shakibaeinia ◽  
Sadegh Jafarinik
Keyword(s):  
Numerical Modeling ◽  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Hydraulic Structures ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Free Surface Flow Analysis by Smoothed Particle Hydrodynamics

2006 ◽  
Author(s):  
Jun Imasato ◽  
Yuzuru Sakai
Keyword(s):  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Particle Density ◽  
Flow Analysis ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Pressure Poisson Equation ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Marker And Cell Method

In this study a new computational algorithm to enforce incompressibility in free surface flow analysis using Smoothed Particle Hydrodynamics (SPH) is presented. The method uses two steps. The first step is a fractional step for solving velocity field forward in time without incompressibility. Then the second step is computed to compensate the pressure Poisson equation using the mass constant equation in a particle field. This method is composed of the above two steps and is similar to SMAC (Simplified Marker and Cell) method commonly used in CFD. However in SPH simulation, the introduction of incompressibility of fluid is easily realized using the particle density concept and the boundary of free surface of fluid is also controlled conveniently by the concept. In this study the algorithm is applied to sloshing problems of vessels with fluid. The numerical results using this algorithm show good results in the behaviors of free surface flow and the pressure evaluations at the wall of the vessels.

scholarly journals IMPROVED SMOOTHED PARTICLE HYDRODYNAMICS WITH RANS FOR FREE-SURFACE FLOW PROBLEMS

2012 ◽  
Vol 09 (01) ◽  
pp. 1240001 ◽  
Author(s):  
J. R. SHAO ◽  
M. B. LIU ◽  
X. F. YANG ◽  
L. CHENG
Keyword(s):  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Computational Accuracy ◽  
Sph Method ◽  
Flow Problems ◽  
Kernel Gradient Correction ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

This paper presents an implementation of an improved smoothed particle hydrodynamics (SPH) method for numerical simulation of free-surface flow problems. The presented SPH method involves two major modifications on the traditional SPH method: (1) kernel gradient correction (KGC) and density correction to improve the computational accuracy in particle approximation and (2) RANS turbulence model to capture the inherent physics of flow turbulence. In the simulation, artificial compressibility for modeling incompressible fluid and ghost particles for treating solid boundaries are both applied. The presented SPH has been applied to two dam-breaking problems. We demonstrated that the presented SPH method has very good performance with more accurate flow patterns and pressure field distribution.

Smoothed particle hydrodynamics modeling of free surface flow

2006 ◽  
Vol 18 (S1) ◽  
pp. 433-435
Author(s):  
Hongbing Xiong ◽  
Lihua Chen ◽  
Jianzhong Lin
Keyword(s):  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Smoothed particle hydrodynamics modeling of free surface flow

2006 ◽  
Vol 18 (3) ◽  
pp. 443-445 ◽  
Author(s):  
Hongbing XIONG ◽  
Lihua CHEN ◽  
Jianzhong LIN
Keyword(s):  
Free Surface ◽  
Smoothed Particle Hydrodynamics ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Particle Hydrodynamics ◽  
Smoothed Particle
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