ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels 2012
DOI: 10.1115/icnmm2012-73125
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Analysis of Gaseous Flows in Minichannels by Molecular Tagging Velocimetry

Abstract: The Molecular Tagging Velocimetry (MTV) technique has been widely used for analyzing velocity fields in liquid mini- and microflows. Concerning gaseous flows, only few works describe the implementation of MTV at millimetric scale, and these studies are limited to the analysis of external flows, such as jet flows. The goal of the present work is to develop this technique for the analysis of internal gas flows in minichannels. It is a first step toward the visualization of velocity profiles in rarefied condition… Show more

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“…On the other hand, the first attempts to measure gas flows velocities by MTV inside devices with millimetric or sub-millimetric dimensions are quite recent and the techniques were based on MTV by direct phosphorescence using acetone as tracer molecule [44,55,56] or on MTV by photoproduct fluorescence using nitric oxide as tracer molecule [57]. These few preliminary measurements have been made in rectangular channels using one dimensional molecular tagging velocimetry (1D-MTV); in this case a single line or a series of parallel lines are tagged perpendicularly to the flow direction ( Fig.…”
mentioning
confidence: 99%
“…On the other hand, the first attempts to measure gas flows velocities by MTV inside devices with millimetric or sub-millimetric dimensions are quite recent and the techniques were based on MTV by direct phosphorescence using acetone as tracer molecule [44,55,56] or on MTV by photoproduct fluorescence using nitric oxide as tracer molecule [57]. These few preliminary measurements have been made in rectangular channels using one dimensional molecular tagging velocimetry (1D-MTV); in this case a single line or a series of parallel lines are tagged perpendicularly to the flow direction ( Fig.…”
mentioning
confidence: 99%