A. Nourbakhsh
ThreeDimensional Numerical Simulation of Drops Suspended in Poiseuille Flow Effect of Reynolds Number
1875 - 1880
2014
8
11
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/9999849
https://publications.waset.org/vol/95
World Academy of Science, Engineering and Technology
A finite differencefront tracking method is used to
study the motion of threedimensional deformable drops suspended in
plane Poiseuille flow at nonzero Reynolds numbers. A parallel
version of the code was used to study the behavior of suspension on a
reasonable grid resolution (grids). The viscosity and density of drops
are assumed to be equal to that of the suspending medium. The effect
of the Reynolds number is studied in detail. It is found that drops
with small deformation behave like rigid particles and migrate to an
equilibrium position about half way between the wall and the
centerline (the SegreSilberberg effect). However, for highly
deformable drops there is a tendency for drops to migrate to the
middle of the channel, and the maximum concentration occurs at the
centerline. The effective viscosity of suspension and the fluctuation
energy of the flow across the channel increases with the Reynolds
number of the flow.
Open Science Index 95, 2014