Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2004-02-19
Physics
Condensed Matter
Soft Condensed Matter
Scientific paper
10.1016/j.physa.2004.05.043
In many applications to biophysics and environmental engineering, sedimentation of non-spherical particles for example: ellipsoids, is an important problem. In our work, we simulate the dynamics of oblate ellipsoids under gravity. We study the settling velocity and the average orientation of the ellipsoids as a function of volume fraction. We see that the settling velocity shows a local maximum at the intermmediate densities unlike the spheres. The average orientation of the ellipsoids also shows a similar local maximum and we observe that this local maximum disappears as the Reynolds number is increased. Also, at small volume fractions, we observe that the oblate ellipsoids exhibit an orientational clustering effect in alignment with gravity accompanied by strong density fluctuations. The vertical and horizontal fluctuations of the oblate ellipsoids are small compared to that of the spheres.
Fonseca Frank
Herrmann Hans Jürgen
No associations
LandOfFree
Sedimentation of Oblate Ellipsoids at low and Moderate Reynolds numbers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Sedimentation of Oblate Ellipsoids at low and Moderate Reynolds numbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sedimentation of Oblate Ellipsoids at low and Moderate Reynolds numbers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-213886