In-Cylinder Fuel and Species Measurements by Planar Laser Induced Fluorescence (PLIF)
Researchers: Dr. Y. Li, J. Williams, Dr. Z. Peng
Supervisors: Prof. H. Zhao, Dr. T. Ma, Prof. N. Ladommatos
Sponsors: EPSRC, Ford Motor Company
LIF Principle
When a ground state atom or molecule is pumped to an excited state by a laser, the excited atom or molecule is spontaneously emitting light, known as fluorescence. The fluorescence intensity is proportional to the species concentration.
Microscopic Description of Laser-Induced Fluorescence (LIF)
PLIF Set-up
In practice, a laser sheet is passed through some flow field, and the resulting fluorescence is captured on a digital camera.
Basic Planar Laser-Induced Fluorescence (PLIF) Experimental Arrangement
Experimental Set-up
Results
PLIF images of in-cylinder fuel distribution without combustion
PLIF images of in-cylinder fuel distribution with CAI combustion
