Quantitative measurement method and device for transient combustion field
A technology for quantitative measurement and combustion field, applied in measuring devices, color/spectral characteristic measurement, instruments, etc., can solve problems such as difficult quantitative measurement, insufficient spatial resolution, and difficulty in realizing two-dimensional quantitative measurement of component concentrations
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[0019] The measurement system includes clock synchronization and delay trigger module, tunable laser generator module, photodetector array, high-speed multi-channel data acquisition module, high-energy pulse laser generator module, lens group, area array photodetector, control and calculation module, etc. Measurement method of the present invention comprises the steps:
[0020] Step 1: Use the steady-state combustion field to calibrate the optical parameters of the PLIF test system:
[0021] Tune the high-energy pulse laser generation module to a certain excitation wavelength λ of the measured group 1 , the pulsed laser generates laser pulses, which are transformed into a sheet-like light source after being shaped by the lens group, passing through a certain section D of the stable flow field to be measured, using nanosecond / picosecond ultra-narrow shutter area photodetectors, with precise delay Trigger control technology eliminates the influence of quenching coefficient fluc...
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