3D velocity fields for the Burger vortex flow treatments

Alternative Title
Date Created
2020-12-30
Location
Coast of Maine
DOI
10.26008/1912/bco-dmo.834530.1
Replaced By
Keywords
Burgers vortex
PIV
Abstract
A laboratory apparatus was constructed to physically create a Burgers vortex. Fluid motion is induced by co-rotating two disks while simultaneously withdrawing fluid axially through hollow drive shafts. The technique creates a flow pattern that mimics a Burgers vortex with size and strength consistent with dissipative-scale turbulent eddies in the coastal and near-surface zones. Specifically, the radius, circulation, and axial strain rate of the Burgers vortex were specified to match typical dissipative vortices corresponding to four turbulence intensity levels (described by a mean turbulent dissipation rate of 0.002, 0.009, 0.096, and 0.25 cm2s-3, respectively). Tomographic particle image velocimetry (tomo-PIV) was used to quantify the flow field, calibrate the apparatus, verify that it produces the desired vortex characteristics, and provide a three-dimensional velocity vector field to compare with zooplankton behavioral assays. The apparatus facilitates direct examination of the mechanistic aspects of plankton interaction with a dissipative-scale turbulent eddy. In depth description of the laboratory setting can be found at Webster and Young, 2015, and Elmi et al., 2021. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/834530
Description
Dataset: Burgers vortex velocity fields
Embargo Date
Citation
Webster, D. (2021). 3D velocity fields for the Burger vortex flow treatments (Version 1) [Data set]. Biological and Chemical Oceanography Data Management Office (BCO-DMO). https://doi.org/10.26008/1912/BCO-DMO.834530.1
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