An extension of the current acetone Planar Laser-Induced Fluorescence (PLIF) was formulated for mixing studies of fluids at subcritical and supercritical conditions. The new technique, called Planar Laser-Induced Fluorescence and Phosphorescence (PLIFP), employs nearly simultaneous measurements of the acetone fluorescence and phosphorescence. The fluorescence signal is utilized to measure the vapor and supercritical transition interface. Acetone phosphorescence is rapidly quenced by even minute amounts of oxygen. Thus the lower mass diffusivity of the liquid compared to the vapor or supercritical fluid can be used to delinate the interface.37 Figure 2.12: Schematic of experimental technique to determine the interface. ... 1 a pressure regulator, 2 a needle valve, 3 a heating elements, 4 a thermocouple, 5 a test section, 6 a pressure gauge, 7 a relief valve ... valves, 4 a flow meters, 5 a pressure transducers, 6 a check valves, 7 a electrical heaters, 8 a thermocouples, 9 a fuel tank, 10 a high pressure chamber. ... Symbols are experimental data.
|Title||:||Acetone Planar Laser-Induced Fluorescence and Phosphorescence for Mixing Studies of Multiphase Flows at High Pressure and Temperature|
|Author||:||Thao T. Tran|
|Publisher||:||ProQuest - 2008|