Skip to main content

High-resolution measurements of the spatial and temporal scalar structure of a turbulent plume

Abstract

 Two techniques are described for measuring the scalar structure of turbulent flows. A planar laser-induced fluorescence technique is used to make highly resolved measurements of scalar spatial structure, and a single-point laser-induced fluorescence probe is used to make highly resolved measurements of scalar temporal structure. The techniques are used to measure the spatial and temporal structure of an odor plume released from a low-momentum, bed-level source in a turbulent boundary layer. For the experimental setup used in this study, a spatial resolution of 150 μm and a temporal resolution of 1,000 Hz are obtained. The results show a wide range of turbulent structures in rich detail; the nature of the structure varies significantly in different regions of the plume.

This is a preview of subscription content, access via your institution.

Author information

Authors and Affiliations

Authors

Additional information

Received: 8 May 2000/Accepted: 15 November 2000

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Crimaldi, J., Koseff, J. High-resolution measurements of the spatial and temporal scalar structure of a turbulent plume. Experiments in Fluids 31, 90–102 (2001). https://doi.org/10.1007/s003480000263

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s003480000263

Keywords

  • Boundary Layer
  • Spatial Structure
  • Temporal Resolution
  • Temporal Scalar
  • Fluorescence Probe