A calibration scheme for quantitative concentration measurements using simultaneous PIV and PLIF

Partha Sarathi, Roi Gurka, Gregory A. Kopp, Paul J. Sullivan

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


A new approach for calibration of planar laser-induced fluorescence (PLIF) measurements is presented. The calibration scheme is based on the fact that there is a constant concentration flux through each cross-section of a fluorescent plume in a given flow field and makes use of simultaneous measurements of particle image velocimetry (PIV) and PLIF. The following are the advantages of the current technique: (1) it is experimentally less demanding and (2) it does not require in situ calibration for generating the calibration curves. The technique can be implemented in many experimental setups (both in water and gaseous flows) provided the geometry of the time-averaged scalar field is known. Using the calibration scheme, an analysis is carried out on the measurements of concentration fields in grid turbulence to validate the proposed technique. To demonstrate the feasibility of the scheme, the distributed second-order moments (μ 2), and concentration and velocity correlations ( $$ \left\langle {u^{\prime}c^{\prime}} \right\rangle $$ and $$ \left\langle {v^{\prime}c^{\prime}} \right\rangle $$ ) are computed. Good agreement is found with previous studies. In addition, a quantitative appraisal of a simple closure approximation of the moment-based transport equation is also presented using simultaneous PIV and PLIF.

Original languageEnglish
Pages (from-to)247-259
Number of pages13
JournalExperiments in Fluids
Issue number1
StatePublished - 1 Jan 2012

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • General Physics and Astronomy
  • Fluid Flow and Transfer Processes


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