Journal
SOFT MATTER
Volume 11, Issue 31, Pages 6235-6244Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sm01318f
Keywords
-
Categories
Funding
- NSF [CBET 1437570]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1437570] Funding Source: National Science Foundation
Ask authors/readers for more resources
Net (as opposed to random) motion of active matter results from an average swim (or propulsive) force. It is shown that the average swim force acts like a body force - an internal body force. As a result, the particle-pressure exerted on a container wall is the sum of the swim pressure [Takatori et al., Phys. Rev. Lett., 2014, 113, 028103] and the 'weight' of the active particles. A continuum description is possible when variations occur on scales larger than the run length of the active particles and gives a Boltzmann-like distribution from a balance of the swim force and the swim pressure. Active particles may also display 'action at a distance' and accumulate adjacent to (or be depleted from) a boundary without any external forces. In the momentum balance for the suspension - the mixture of active particles plus fluid - only external body forces appear.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available