A system and method for measuring the entropy wave propagation characteristics of a combustion chamber based on wavelength modulation spectroscopy.

Abstract

This invention provides a system and method for measuring the entropy wave propagation characteristics of a combustion chamber based on wavelength modulation spectroscopy, relating to the field of tunable laser gas absorption spectroscopy detection technology. The system includes: a transmitter, located on one side of the combustion chamber, for emitting laser light; a receiver, located on the other side of the combustion chamber, for receiving the laser light emitted by the transmitter and performing signal conversion; and a data acquisition and processing module connected to the receiver for receiving and processing the signal output by the receiver. This invention achieves real-time dynamic measurement of the generation and propagation of entropy waves in the combustion chamber of an energy power device through innovative optical path design and signal modulation methods, and by inventing an entropy wave measurement combustion chamber structure adapted to energy power devices.

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