Simulation of the Three-dimensional Flow in the Single Screw Extruder Based on the Incompressible Smoothed Particle Hydrodynamics

2012 ◽  
Vol 48 (22) ◽  
pp. 80
Author(s):  
Tianwen DONG
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Three Dimensional ◽  
Screw Extruder ◽  
Three Dimensional Flow ◽  
Single Screw ◽  
Dimensional Flow ◽  
Single Screw Extruder ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressible Smoothed Particle Hydrodynamics

Analysis of Mixing Efficiency in a Multi-Cut Transfermix

1995 ◽  
Vol 68 (5) ◽  
pp. 773-782 ◽  
Author(s):  
Tao Li ◽  
Hongfei Cheng ◽  
Ica Manas-Zloczower
Keyword(s):  
Three Dimensional ◽  
Mixing Efficiency ◽  
Power Law Model ◽  
Screw Extruder ◽  
Axial Pressure ◽  
Three Dimensional Flow ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Model Fluid ◽  
Constant Output

Abstract Three-dimensional flow patterns of a power-law model fluid in a Multi-Cut Transfermix were calculated. A particle tracking algorithm was used to study the dynamics of mixing. Distributive mixing efficiency was quantified in terms of length stretch distributions and average values. The influence of rotational speed and axial pressure difference on mixing efficiency, under constant output was analyzed. The mixing performances in the MCT was also compared with that in a single screw extruder with the same dimensions as the entrance region of MCT and operating at the same flow rate.

Investigation on the Non-Newtonian Fluid Flow in a Single Screw Extruder Using Incompressible SPH (ISPH)

2012 ◽  
Vol 482-484 ◽  
pp. 745-748 ◽  
Author(s):  
Tian Wen Dong ◽  
Shun Liang Jiang ◽  
Xing Yuan Huang ◽  
He Sheng Liu ◽  
Qiang Qiang Huang
Keyword(s):  
Fluid Flow ◽  
Newtonian Fluid ◽  
Shear Thickening ◽  
Screw Extruder ◽  
Driven Cavity ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Incompressible Sph ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Based on the incompressible smoothed particle hydrodynamics (ISPH) method, a program was developed to simulate the non-Newtonian fluid flow in the mixing section of a single screw extruder. The transverse flow in the extruder is mimicked by one 2-D lid-driven cavity flow. The mirror particles are used to treat boundary. The power-law model is used to calculate the viscosity of the fluid. The shear-thinning, the shear-thickening and Newtonian fluid in the single screw extruder are simulated and deeply analyzed. Through comparing the velocity profile along the centre of screw extruder with the theoretical solution, this method has been proven to be accurate and effective. It laid the foundation for the simulating of the more complex 3-D model.

Incompressible smoothed particle hydrodynamics for MHD double-diffusive natural convection of a nanofluid in a cavity containing an oscillating pipe

2019 ◽  
Vol 30 (2) ◽  
pp. 882-917 ◽  
Author(s):  
Abdelraheem M. Aly
Keyword(s):  
Natural Convection ◽  
Smoothed Particle Hydrodynamics ◽  
Cavity Wall ◽  
Lagrangian Description ◽  
Content Type ◽  
Wide Range ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Incompressible Smoothed Particle Hydrodynamics ◽  
Double Diffusive

Purpose This paper aims to adopt incompressible smoothed particle hydrodynamics (ISPH) method to simulate MHD double-diffusive natural convection in a cavity containing an oscillating pipe and filled with nanofluid. Design/methodology/approach The Lagrangian description of the governing partial differential equations are solved numerically using improved ISPH method. The inner oscillating pipe is divided into two different pipes as an open and a closed pipe. The sidewalls of the cavity are cooled with a lower concentration C_c and the horizontal walls are adiabatic. The inner pipe is heated with higher concentration C_h. The analysis has been conducted for the two different cases of inner oscillating pipes under the effects of wide range of governing parameters. Findings It is found that a suitable oscillating pipe makes a well convective transport inside a cavity. Presence of the oscillating pipe has effects on the heat and mass transfer and fluid intensity inside a cavity. Hartman parameter suppresses the velocity and weakens the maximum values of the stream function. An increase on Hartman, Lewis and solid volume fraction parameters leads to an increase on average Nusselt number on an oscillating pipe and left cavity wall. Average Sherwood number on an oscillating pipe and left cavity wall decreases as Hartman parameter increases. Originality/value The main objective of this work is to study the MHD double-diffusive natural convection of a nanofluid in a square cavity containing an oscillating pipe using improved ISPH method.

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