Accuracy in 3D Particle Tracing

1998 ◽  
pp. 329-341 ◽  
Author(s):  
Adriano Lopes ◽  
Ken Brodlie
Keyword(s):  
Particle Tracing

Macro- and Microscale Fabrication by Field Assisted Nanoparticle Assembly - The Challenging Path from Science to Engineering

2012 ◽  
Vol 507 ◽  
pp. 155-162 ◽  
Author(s):  
G. Falk
Keyword(s):  
Particle Deposition ◽  
Membrane Surface ◽  
Debye Length ◽  
Alumina Nanoparticles ◽  
Navier Stokes ◽  
Particle Tracing ◽  
Membrane Pore ◽  
Stagnation Points ◽  
Electroosmotic Pumping ◽  
Exchange Membrane

Local electrophoretic deposition of alumina nanoparticles under external DC electric field conditions with submerged impinging jet type capillaries arranged at ion exchange membrane substrates is presented. In order to evaluate particle deposition mechanisms a mathematical model is derived describing electroosmotic pumping of electrolyte through a micrometre scaled channel. The system is governed by surficial charge discontinuities and modeled by coupled mass balances, Ohmic law, Navier Stokes, and Nernst-Planck equations. Based on the boundary conditions of bulk convective electrodiffusion the effect of the imposed surface potential on the fluid flow behaviour and on particle tracing characteristics is studied by means of numerical analysis. The following findings have been obtained. At the corner edges of the charged surficial boundaries micro-vortices are generated to build up local stagnation points onto the modeled membrane surface. Particle tracing analysis reveal that the particle movement is caused by mass transport within the membrane directed velocity field to the stagnation point. The complex electrokinetics and electrohydro-dynamics suggest further investigations at membrane pore sizes in the range of the Debye-length to model the non-linear current-voltage characteristic that has already been experimentally proven for these kind of membrane EPD systems.

A 3D MHD‐Particle Tracing Model of Na + Energization on Mercury's Dayside

2021 ◽  
Author(s):  
Austin N. Glass ◽  
Jim M. Raines ◽  
Xianzhe Jia ◽  
Valeriy Tenishev ◽  
Yinsi Shou ◽  
...  
Keyword(s):  
Particle Tracing

Simulation of Thermal Spray Process Based on Particle Tracing Method

2000 ◽  
Author(s):  
K. Wada ◽  
M. Ito ◽  
M. Takahashi ◽  
K. Takaishi
Keyword(s):  
Thermal Spray ◽  
Coating Thickness ◽  
Computer Aided Design ◽  
Simulation Method ◽  
Work Piece ◽  
Stainless Steel 316L ◽  
Particle Tracing ◽  
Computer Aided ◽  
Thermal Spray Processes ◽  
Tracing Method

Abstract As applications of thermal spray processes are expanding, the importance of computer-aided design systems and computer-aided engineering systems for these processes has been growing. The principal objective of this study is to propose a new analytic method for the prediction of coating thickness and deposition efficiency. This method is called the particle tracing method and is based on the Monte Carlo simulation method. In order to evaluate the validity of this model, several tests were carried out. The same stainless steel 316L layers coated by the HP/HVOF process (TAFA JP-5000) were used throughout each test. First, spray patterns were observed which had formed on flat-plate specimens from various spray gun angles. Coating thickness distributions on several curved planes were consequently investigated. Finally, the coating process for a blade of a compressor in a gas turbine was simulated. In the right of the results of these experiments, it is summarized that the calculated values of the coating thickness obtained by our method are in good agreement with experimental values. The accuracy is within 10% of the maximum thickness value in each specimen, except for at the edge of the work-piece. In conclusion, the particle-tracing method can be applied to the fundamental analytic model in the CAD or CAE system for thermal spray processes.

scholarly journals An experimental and theoretical investigation of particle–wall impacts in a T-junction

2013 ◽  
Vol 727 ◽  
pp. 236-255 ◽  
Author(s):  
D. Vigolo ◽  
I. M. Griffiths ◽  
S. Radl ◽  
H. A. Stone
Keyword(s):  
Flow Direction ◽  
Three Dimensional ◽  
Stokes Number ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Viscous Boundary Layer ◽  
Particle Tracing ◽  
Two Dimensional Model ◽  
Viscous Boundary ◽  
The Impact

AbstractUnderstanding the behaviour of particles entrained in a fluid flow upon changes in flow direction is crucial in problems where particle inertia is important, such as the erosion process in pipe bends. We present results on the impact of particles in a T-shaped channel in the laminar–turbulent transitional regime. The impacting event for a given system is described in terms of the Reynolds number and the particle Stokes number. Experimental results for the impact are compared with the trajectories predicted by theoretical particle-tracing models for a range of configurations to determine the role of the viscous boundary layer in retarding the particles and reducing the rate of collision with the substrate. In particular, a two-dimensional model based on a stagnation-point flow is used together with three-dimensional numerical simulations. We show how the simple two-dimensional model provides a tractable way of understanding the general collision behaviour, while more advanced three-dimensional simulations can be helpful in understanding the details of the flow.

scholarly journals Energetic Particle Tracing of Interplanetary CMEs: ULYSSES/HI-SCALE and ACE/EPAM Results

2004 ◽  
Vol 2004 (IAUS226) ◽  
pp. 361-366
Author(s):  
Olga E. Malandraki ◽  
D. Lario ◽  
T.E. Sarris ◽  
N. Tsaggas ◽  
E.T. Sarris
Keyword(s):  
Energetic Particle ◽  
Particle Tracing
Sign in / Sign up

Export Citation Format

Share Document