Molecular Tagging Velocimetry (MTV) and Its Automotive Applications

Abstract

Abstract.This work provides an overview of the technique of Molecular Tagging Velocimetry (MTV) and some of its automotive applications. The various elements of MTV implementation are briefly described in terms of the available molecular tracers, methods of tagging, detection, and processing schemes. The automotive applications of this velocimetry technique are demonstrated in mapping the velocity field of the intake flow into a "steady flow rig" model of an internal combustion engine and flow mapping of cycle-to-cycle variation in late compression of a motored IC engine.

Spray measurement technology: a review

“…Without particle seeding, gas-phase velocity fields in sprays have been measured using a technique sometimes called gaseous-image velocimetry (GIV) which combines double-exposure LIF (section 3.3.3) and PIV-like ('optical-flow') analysis with NO as the fluorescent tracer [78]. Single-laser-pulse techniques for droplet and gas-phase velocity fields, known as laser flow tagging (LFT) [79] or molecular tagging velocimetry (MTV) [80], involve seeding the liquid or gas with an appropriate phosphorescent tracer. A short-pulse laser 'writes' a line or grid pattern into the dispersion of phosphorescent molecules.…”

Entwicklung optischer Feldmessverfahren zur Charakterisierung mikrofluidischer Mischungsvorgänge

“…Der konvektive Flüssigkeitsstrom über einer gekühlten Platte wurde in [42] mit dem MTV-Verfahren untersucht. Eine umfangreichere Auflistung verschiedener Tagging-Techniken und Anwendungen findet sich in [30,31,33]. In [20] wird eine Überprüfung der MTV an einer einfachen Wirbelströmung durchgeführt.…”