Simultaneous, Planar Determination of Fuel/Air Ratio and Velocity Field in Single Phase Mixture Formation Processes
نویسندگان
چکیده
Laser induced fluorescence is used to develop a 2D measurement technique for mixture formation analysis of fuel and air in a broad temperature regime from 398 K up to 548 K. The measurement principle is called FARLIF (fuel-air ratio by laser-induced fluorescence). Its application is tested on the tracer toluene in the non-fluorescent model fuel isooctane as well as on an auto-fluorescing nearstandard gasoline. A frequency quadrupled double-pulse Nd:YAG laser at 266 nm is used for excitation while the fluorescence is detected by an intensified doubleframe CCD camera. The double-frame images are used for analysis of the mixture motion. For elevated temperatures the FARLIF signal shows a temperature dependence. Therefore, a correction mechanism is suggested.
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