%0 Journal Article %A Wissel, Stephan %A Grünefeld, Gerd %D 2006 %I Begell House %N 4 %P 349-364 %R 10.1615/AtomizSpr.v16.i4.10 %T VELOCITY MEASUREMENTS BY LASER FLOW TAGGING IN THE DENSE REGION OF DIESEL SPRAYS %U https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,3d0aedb56da6ab33,399da1f549564d4c.html %V 16 %X 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. %8 2006-04-01