A versatile scanning method for volumetric measurements of velocity and density fields
Measurement Science and Technology
Institute of Physics and the Physical Society
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Partridge, J., Lefauve, A., & Dalziel, S. (2019). A versatile scanning method for volumetric measurements of velocity and density fields. Measurement Science and Technology, 30 (5. 055203)https://doi.org/10.1088/1361-6501/ab0bfd
Understanding turbulence in a stratified environment requires a detailed picture of both the velocity field and the density field. Experimentally, this represents a significant measurement challenge, especially when full three-dimensional data is needed to accurately characterise the turbulent fields. This paper presents a new approach to obtaining such data through well-resolved, near-instantaneous volume-spanning measurements. This is accomplished using a simultaneous PIV and PLIF scanning setup that is highly versatile while allowing precise overlapping light sheets in a volume. Moreover, the approach detailed here allows for complex scan sequences over varying volumes without the need for mechanical adjustment. To demonstrate the technique, preliminary results from the buoyancy-driven exchange flow through density fluids are shown.
This work was supported by EPSRC Programme Grant EP/K034529/1.
External DOI: https://doi.org/10.1088/1361-6501/ab0bfd
This record's URL: https://www.repository.cam.ac.uk/handle/1810/290047