Direct numerical simulation of gas-solid-liquid flows with capillary effects: An application to liquid bridge forces between spherical particles

2016 ◽  
Vol 94 (6) ◽  
Author(s):  
Xiaosong Sun ◽  
Mikio Sakai
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Liquid Bridge ◽  
Spherical Particles ◽  
Capillary Effects ◽  
Liquid Flows ◽  
Solid Liquid

SMOOTHED PROFILE METHOD TO SIMULATE COLLOIDAL PARTICLES IN COMPLEX FLUIDS

2009 ◽  
Vol 20 (09) ◽  
pp. 1457-1465 ◽  
Author(s):  
RYOICHI YAMAMOTO ◽  
YASUYA NAKAYAMA ◽  
KANG KIM
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Colloidal Particles ◽  
Stokes Equations ◽  
Electrolyte Solutions ◽  
Rigid Body Dynamics ◽  
Spherical Particles ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Charged Colloids

A new direct numerical simulation scheme, called "Smoothed Profile (SP) method," is presented. The SP method, as a direct numerical simulation of particulate flow, provides a way to couple continuum fluid dynamics with rigid-body dynamics through smoothed profile of colloidal particle. Our formulation includes extensions to colloids in multicomponent solvents such as charged colloids in electrolyte solutions. This method enables us to compute the time evolutions of colloidal particles, ions, and host fluids simultaneously by solving Newton, advection-diffusion, and Navier–Stokes equations so that the electro-hydrodynamic couplings can be fully taken into account. The electrophoretic mobilities of charged spherical particles are calculated in several situations. The comparisons with approximation theories show quantitative agreements for dilute dispersions without any empirical parameters.

Hydrocyclone Velocity Flow Simulation and Experimental Study Based on Fluid Mechanics

2012 ◽  
Vol 625 ◽  
pp. 113-116
Author(s):  
Hui Xu ◽  
Xiao Hong Chen ◽  
Yao Yao
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Production Capacity ◽  
Flow Simulation ◽  
Simulation System ◽  
The Body ◽  
Inlet Pressure ◽  
Time Data ◽  
Liquid Flows ◽  
Solid Liquid

The strong swirl turbulent flow in hydrocyclone causes major difficulties in modeling their internal solid-liquid flows. In this thesis, the strongly swirling turbulent flow in solid-liquid hydrocyclone separators is simulated by using Reynolds stress equation models (RSM) of FLUENT applications to use the body-fitted and partition meshes. The results give some new understanding on 3D velocity distribution. According to the numerical simulation results, the lab experiment is implemented in this thesis.the lab simulation system and real-time data process system are set up to gather the parameters in the simulation system. the relation curve of production capacity-inlet pressure and separation property-inlet pressure are analyzed. Comparing with the numerical simulation ,the result is reasonable.

scholarly journals Direct numerical simulation of magneto-Archimedes separation of spherical particles

2021 ◽  
Vol 910 ◽  
Author(s):  
S. Tajfirooz ◽  
J.G. Meijer ◽  
R.A. Dellaert ◽  
A.M. Meulenbroek ◽  
J.C.H. Zeegers ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Spherical Particles

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