An Interpolated Bounce Back Thermable Method for Simulating Solid Particles Dynamics in a Viscous Medium

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
D.B. Zhakebayev ◽  
A.S. Zhumali ◽  
B. Satenova
Keyword(s):  
Viscous Medium ◽  
Solid Particles ◽  
Bounce Back ◽  
Particles Dynamics

scholarly journals Analysis of Particle Motion in Wall-Free Concentrated Vortexes in Relation to Flight Safety Problem

10.12737/6633 ◽  
2014 ◽  
Vol 3 (6) ◽  
pp. 31-36
Author(s):  
Вараксин ◽  
A. Varaksin ◽  
Протасов ◽  
M. Protasov
Keyword(s):  
Vortex Core ◽  
Solid Particles ◽  
Flight Safety ◽  
Aircraft Engines ◽  
Dynamic Relaxation ◽  
Air Intake ◽  
Maximal Time ◽  
Flow Duct ◽  
Particles Dynamics ◽  
Made In

The ingestion in aircraft engines is one of the actual problems related to the flight safety. One of possible reasons of ingestion in the gas-air flow duct of compressor is a formation of vortex core under an air intake on a runway surface during engine working on a stop. Calculations of the solid particles’ motion in wall-free concentrated vortexes, being the analogues of vortex core have been made in this paper. The numerical results have allowed to find peculiarities of behavior for particles with different inertia (different density and sizes) in vortexes of various intensity. Based on calculations and available experimental data a dimensionless criterion had been supposed, which determines the particles’ behavior in concentrated vortex structures. Estimations for maximal time of dynamic relaxation for particles involved in the air intake by vortex cores of different intensities have been made with use of this criterion. The knowledge of particles’ dynamics in the vortex cores formed near the air intake of aircraft engines is necessary to develop the methods to protect them from possible ingestion from the runway to ensure the flight safety.

scholarly journals LBM modeling of solid particle dynamics in a viscous medium

2021 ◽  
Vol 82 (4) ◽  
pp. 128-137
Author(s):  
B. T. Zhumagulov ◽  
◽  
D. B. Zhakebayev ◽  
A. S. Zhumali ◽  
B. A. Satenova ◽  
...  
Keyword(s):  
Lattice Boltzmann Method ◽  
Solid Particle ◽  
Lattice Boltzmann ◽  
Particle Motion ◽  
Viscous Medium ◽  
Particle Dynamics ◽  
Boltzmann Method ◽  
Bounce Back ◽  
Moving Liquid ◽  
Good Agreement

This article discusses the mathematical and computer modeling of single solid particle dynamics in a viscous medium. The results of the study were obtained using a 3D numerical algorithm implemented on the basis of the D3Q19 model of the lattice Boltzmann method (LBM). The moving «liquid-solid» interface is accounted for using an interpolated bounce back (IBB) scheme. The velocity of a solid particle motion and the trajectory of a particle at Re = 1,56 are obtained. The results are in good agreement with the experimental and numerical results of other authors.

How to Resist and Bounce Back When Things Get Tough

PsycCRITIQUES ◽  
2011 ◽  
Vol 56 (17) ◽  
Author(s):  
Victor A. Colotla
Keyword(s):  
Bounce Back

Bounce back with a rebound relationship

2009 ◽  
Author(s):  
Jared C. Clark
Keyword(s):  
Bounce Back

Abrasive wear of polymer/steel gear drives

2008 ◽  
Vol 4 (1) ◽  
pp. 1-26
Author(s):  
Gábor Kalácska
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Material Selection ◽  
Solid Particles ◽  
Soil Types ◽  
General View ◽  
Modern Engineering ◽  
Clean Environment ◽  
Engineering Polymers ◽  
Plastic Gears

Research was performed on the friction, wear and efficiency of plastic gears made of modern engineering polymers and their composites both in a clean environment (adhesive sliding surfaces) and in an environment contaminated with solid particles and dust (abrasive), with no lubrication at all. The purpose is to give a general view about the results of abrasive wear tests including seven soil types as abrasive media. At the first stage of the research silicious sand was applied between the meshing gears and the wear of plastic and steel gears was evaluated and analyzed from the point of different material properties (elongation at break, hardness, yield stress, modulus of elasticity) and its combinations. The different correlations between the experienced wear and material features are also introduced. At the second stage of the project the abrasive sand was replaced with different physical soil types. The abrasive wear of gears is plotted in the function of soil types. The results highlight on the considerable role of physical soil types on abrasive wear resistance and the conclusions contain the detailed wear resistance. The results offer a new tribology database for the operation and maintenance of agricultural machines with the opportunity of a better material selection according to the dominant soil type. This can finally result longer lifetime and higher reliability of wearing plastic/steel parts.

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