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ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684
Indexed in
VELOCITY MEASUREMENTS BY LASER FLOW TAGGING IN THE DENSE REGION OF DIESEL SPRAYS
Краткое описание
The applicability of the laser flow tagging technique is investigated for velocity measurements in the liquid phase of diesel sprays. This is done under atmospheric and near-engine-like boundary conditions in a constant volume chamber. Measurements are conducted in the primary breakup zone of the spray, where other optical techniques like particle image velocimetry or phase Doppler anemometry cannot be applied. A phosphorescent tracer dissolved in the model fuel is excited by a short UV laser pulse. By means of an appropriate optical setup, phosphorescent tag lines are generated in the spray. Using an image-intensified charge-coupled device (CCD) camera, the displacement, and therefore the velocity, of the tagged droplets is determined.
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Fansler Todd D, Parrish Scott E, Spray measurement technology: a review, Measurement Science and Technology, 26, 1, 2015. Crossref
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Wissel S., Hoffmann T., Hottenbach P., Koss H.-J., Pauls C., Grünefeld G., Droplet Velocity Measurements in Direct-Injection Diesel Sprays Under High-Pressure and High-Temperature Conditions by Laser Flow Tagging, SAE Technical Paper Series, 1, 2008. Crossref