平場高幀頻(時間分辨)燃燒診斷

This contribution highlights recent advances in laser diagnostics at high repetition rates. Based on recent improvements in all-solid-state diode-pumped laser- and CMOS-camera technology, well known methods such as Mie scattering, particle image velocimetry (PIV) or planar laser-induced fluorescence (PLIF) are adapted and extended to repetition rates in the kHz-regime, and applied simultaneously to a turbulent opposed jet burner. The high temporal resolution enables one to track transient events in turbulent combustion, such as flame extinction and ignition. New perspectives into turbulent combustion are thus possible by quasi-4D imaging or multidimensional conditioning on transient phenomena. 德國LaVision PIV/PLIF粒子成像測速場儀