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Feasibility study of whole-field pressure measurements in gas flows: molecular tagging manometry

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Abstract

Outlined in this paper are the theoretical foundation, implementation framework and experimental demonstration of a new diagnostic technique for non-intrusive, whole-field measurement of pressure within gasses. The new technique, which is referred to as molecular tagging manometry (MTM), relies on oxygen quenching of phosphorescence emission from photo-excited tracers in oxygen-containing gases. As the pressure increases, the density of oxygen becomes larger, leading to a shorter emission lifetime: a working principle that is similar to pressure sensitive paint but applied within the body of the flow rather than on the wall. Using an experimental apparatus that is built around a pressure vessel, the viability of MTM is demonstrated for the first time using acetone as a tracer. Furthermore, the experimentally recorded response is compared to theoretical predictions, and the sensitivity of MTM’s response to the uncertainty of various parameters is analyzed.

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Acknowledgments

This work was sponsored by the National Science Foundation (Grant # CTS0649744), monitored by Dr. William Schultz, and partially supported by the CRC Program of the NSF (Grant Number CHE-0714028). Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. We gratefully acknowledge the assistance of Professor Tonghun Lee and Dr. Shahram Pouya during the course of this study. The early aspects of this work benefitted from analysis by Dr. Hui Hu.

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  1. Rajat Basu

    Present address: Caterpillar Inc., Peoria, IL, 61629, USA

Authors and Affiliations

  1. Mechanical Engineering Department, Michigan State University, East Lansing, MI, 48824, USA

    Rajat Basu, Ahmed M. Naguib & Manoochehr M. Koochesfahani

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  1. Rajat Basu
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  2. Ahmed M. Naguib
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  3. Manoochehr M. Koochesfahani
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Correspondence to Manoochehr M. Koochesfahani.

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Basu, R., Naguib, A.M. & Koochesfahani, M.M. Feasibility study of whole-field pressure measurements in gas flows: molecular tagging manometry. Exp Fluids 49, 67–75 (2010). https://doi.org/10.1007/s00348-009-0795-2

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  • DOI: https://doi.org/10.1007/s00348-009-0795-2

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