Probe and optical diagnostics for scalar measurements in premixed flames
作者： P. Ferrão , M. V. Heitor
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摘要: Procedures which allow the measurement of scalars in premixed recirculating flames using digitally-compensated thermocouples or, alternatively, laser-Rayleigh scattering, are described together with error sources associated use these techniques. The procedure for numeric compensation thermocouple signals included experimental data on characteristics effect velocity and temperature time constant was optimised to guarantee temporal resolution system. Rayleigh system its calibration a propane/air flame avoid contamination Mie scattering from small particles. photomultiplier shot noise signal is quantified used compensate results. two techniques shown give rise results close agreement be suitable characterise turbulence nature strongly flames.
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