Experiments in Fluids

, Volume 22, Issue 1, pp 67–77 | Cite as

A spatial correlation technique for estimating velocity fields using molecular tagging velocimetry (MTV)

  • C. P. Gendrich
  • M. M. Koochesfahani
Originals

Abstract

A direct spatial image correlation technique is presented for estimating the Lagrangian displacement vector from image pairs based on molecular tagging diagnostics. The procedure provides significant improvement in measurement accuracy compared to existing approaches for molecular tagging velocimetry (MTV) analysis. Furthermore, this technique is of more general utility in that it is able to accommodate other laser tagging patterns besides the usual grid arrangement. Simulations are performed to determine the effects of many experimental and processing issues on the sub-pixel accuracy of displacement estimates. The results provide guidelines for optimizing the implementation of MTV. Experimental data in support of this processing technique are provided.

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • C. P. Gendrich
    • 1
  • M. M. Koochesfahani
    • 1
  1. 1.Department of Mechanical EngineeringMichigan State UniversityEast LansingUSA

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