title: Effective drift velocities and effective diffusivities of swimming microorganisms in external flows.
abstract: In this note we calculate the effective drift velocities and the effective diffusivities of swimming microorganisms in an external flow field. It is shown that if the ambient velocity field is incompressible then the effects of reorientation of the cells can under certain circumstances enhance the effective drift velocity along the preferred direction.
authors.affiliation: School of Mathematics and Statistics, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. ay@for.mat.bham.ac.uk
authors.forename: A N
authors.initials: AN
authors.lastname: Yannacopoulos
authors.forename: G
authors.initials: G
authors.lastname: Rowlands
mesh_terms: D018407:Bacterial Physiological Phenomena; D001692:Biological Transport; D056890:Eukaryota / Q000502:physiology*; D008954:Models, Biological