Volume 20, Issue 3 (March 2020)                   Modares Mechanical Engineering 2020, 20(3): 731-738 | Back to browse issues page

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Ehsani R, Rahmati A. Numerical Study of Microchannel Blockage Time in the Interaction of Two-Phase Flow with a Particle Using Lattice Boltzmann Method. Modares Mechanical Engineering 2020; 20 (3) :731-738
URL: http://mme.modares.ac.ir/article-15-27354-en.html
Numerical Study of Microchannel Blockage Time in the Interaction of Two-Phase Flow with a Particle Using Lattice Boltzmann Method
R. Ehsani1 , A. Rahmati * 2
1- Thermal Sciences & Fluid Mechanics Department, Mechanical Engineering Faculty, University of Kashan, Kashan, Iran
2- Thermal Sciences & Fluid Mechanics Department, Mechanical Engineering Faculty, University of Kashan, Kashan, Iran , ar_rahmati@kashanu.ac.ir
Abstract:   (4192 Views)
Atherosclerosis is responsible for almost 35% of annual deaths in developed countries. The disease could be due to an artery blockage by the interaction of an externally second phase (air bubbles, medicine carrying capsules) with a particle which is entered to the bloodstream. The effect of some most important affecting parameters on the blockage time of a microchannel due to the impact of a particle and a second moving second phase is investigated using lattice Boltzmann method and with programming Fortran90. The authors tried to mimic the physic of the flow of a small artery by generating the same geometry and changing geometrical and physical parameters. Lee and Lin Lattice Boltzmann multi-phase model is used beside the immersed boundary method. It is investigated the small changes in Capillary flow has no meaningful effect on the interaction of second phase and particle. But, the ratio of particle size to the channel width affects the blockage time in the microchannel. In fact, the blockage time will increase by an increase in the size of the particle. The initial size of the second phase to particle size ratio has the highest effect on the blockage time.


 
Keywords: Lattice Boltzmann Method, Immersed Boundary Method, Lee and Lin Method, Two-Phase Flow-Particle Interaction
Full-Text [PDF 1061 kb]   (1825 Downloads)    
Article Type: Original Research | Subject: Heat & Mass Transfer
Received: 2019/02/20 | Accepted: 2019/07/9 | Published: 2020/03/1
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