Detailed experimental and numerical investigation of fluid–particle interactions of a fixed train of spherical particles inside a square duct

2018 ◽  
Vol 103 ◽  
pp. 16-29
Author(s):  
M. Ramezani ◽  
B. Sun ◽  
S. Subramaniam ◽  
M.G. Olsen
Keyword(s):  
Numerical Investigation ◽  
Fluid Particle ◽  
Spherical Particles ◽  
Particle Interactions ◽  
Square Duct

Two Algorithms for Solving Coupled Particle Dynamics and Flow Field Equations in Two-Phase Flows

2010 ◽  
Author(s):  
R. Kamali ◽  
S. A. Shekoohi
Keyword(s):  
Flow Field ◽  
Particle Dynamics ◽  
Fluid Particle ◽  
Navier Stokes ◽  
Test Cases ◽  
Particle Interactions ◽  
Field Equations ◽  
Two Phase ◽  
Coupled Equations ◽  
Solution Accuracy

Two methods for solving coupled particle dynamics and flow field equations simultaneously by considering fluid-particle interactions to simulate two-phase flow are presented and compared. In many conditions, such as magnetic micro mixers and shooting high velocity particles in fluid, the fluid-particle interactions can not be neglected. In these cases it is necessary to consider fluid-particle interactions and solve the related coupled equations simultaneously. To solve these equations, suitable algorithms should be used to improve convergence speed and solution accuracy. In this paper two algorithms for solving coupled incompressible Navier-Stokes and particle dynamics equations are proposed and their efficiencies are compared by using them in a computer program. The main criterion that is used for comparison is the time they need to converge for a specific accuracy. In the first algorithm the particle dynamics and flow field equations are solved simultaneously but separately. In the second algorithm in each iteration for solving flow field equations, the particle dynamics equation is also solved. Results for some test cases are presented and compared. According to the results the second algorithm is faster than the first one especially when there is a strong coupling between phases.

scholarly journals Numerical Investigation of DC Dielectrophoretic Deformable Particle–Particle Interactions and Assembly

Micromachines ◽  
2018 ◽  
Vol 9 (6) ◽  
pp. 260 ◽  
Author(s):  
Xiang Ji ◽  
Li Xu ◽  
Teng Zhou ◽  
Liuyong Shi ◽  
Yongbo Deng ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Particle Interactions ◽  
Deformable Particle
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