Lattice Boltzmann simulation techniques for simulating microscopic swimmers
COMPUT PHYS COMMUN 179:1-3 (2008) 159-164
Abstract:
We use two different sub-gridscale lattice Boltzmann methods to simulate the swimming motion of a model swimmer. We systematically characterise the discretisation errors associated with placing a continuous object on a grid, and place limits on how low the Reynolds number needs to be in order to reach the characteristic zero Reynolds number regime. (C) 2008 Elsevier B.V. All rights reserved.Capillary filling in patterned channels.
Phys Rev E Stat Nonlin Soft Matter Phys 77:6 Pt 2 (2008) 067301
Abstract:
We show how the capillary filling of microchannels is affected by posts or ridges on the sides of the channels. Ridges perpendicular to the flow direction introduce contact line pinning, which slows, or sometimes prevents, filling, whereas ridges parallel to the flow provide extra surface that may enhance filling. Patterning the microchannel surface with square posts has little effect on the ability of a channel to fill for equilibrium contact angle theta_{e} less than approximately 30 degrees . For theta_{e} greater than approximately 60 degrees , however, even a small number of posts can pin the advancing liquid front.Capillary filling in patterned channels
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Shearing active gels close to the isotropic-nematic transition
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Dumb-bell swimmers
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