Browse Publications Technical Papers 2015-01-1840

Acetone PLIF Measurements of Temperature and Concentration Distributions in a High-Temperature and High-Pressure Spray 2015-01-1840

Temperature distributions in n-heptane and n-tridecane sprays were measured by the planar laser induced fluorescence (PLIF) method. The spray was formed by injecting fuel into high temperature and high pressure ambient, which was formed by compression of rapid compression and expansion machine (RCEM). In this PLIF method, acetone was used as a fluorescence tracer and was mixed with ambient gas. The fluorescence tracer was excited by 266 nm (the 4th harmonic of a Nd:YAG laser). The fluorescence intensity was measured by an ICCD camera. The temperature and concentration were estimated based on temperature dependency of the fluorescence intensity and the assumption of adiabatic mixing. Based on the measurement results, The difference of mixture distributions in n-heptane and n-tridecane sprays are discussed.


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