©2020 Biological and Chemical Oceanography Data Management Office.Dense suspensions of active, self-propelled agents spontaneously exhibt large-scale, chaotic flow structures. Descriptions of their dynamics have predominately focused on characterization of spatiotemporal correlation of the velocity field, but their transport and mixing properties remain largely unknown. In this work, we use Lagrangian analysis techniques to study the chaotic flow field generated by "bacterial turbulence" in dense suspensions of Bacillus subtilis. High-resolution velocity field...
Show moreVelocity Field Variables:
U: u-component of the velocity fields
V: v-component of the velocity fields
X,Y: XY coordinates produced from the PIV analysis (meshgrid layout)
Stretching Field Variables:
TINT: Integration time for tracer particles (s)
choice: parameter choices for numerical experiment, see code for details
stretch: a Nx1 cell of the stretching field for this particular integration time, where each cell is a frame
tintegrate: time vector of the tracer particle integration
x_field, y_field: Initial xy coordinates of tracer particle grids. Formed using meshgrid
Guasto, J., Henshaw, R. J. (2023) Lagrangian Structure and Stretching in Bacterial Turbulence Modeling Results from February 2020 (VIC project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-09-06 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/907823 [access date]
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