chanelink logo
CHANELINK
English

Developing a concentration independent pressure sensing method for high-temperature combustion diagnosis

182
2024-03-08 14:11:01
See translation

Recently, a research group led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences developed a concentration independent pressure sensing method based on two-color laser absorption spectrum for high-temperature combustion diagnosis.

The research findings are published in Optics Letters.
Aircraft engines are developing towards high-temperature and high-pressure combustion to improve thermodynamic efficiency. Pressure is an important parameter for monitoring engine performance and diagnosing engine faults. However, traditional contact pressure sensors not only interfere with the combustion flow, but are also limited by the temperature tolerance of the sensor material.

In this study, researchers developed a non-contact pressure sensing method for high-temperature environments and demonstrated it at temperatures up to 1300 K. The focus of this study is on how to address the impact of molecular concentration on gas pressure measurement in high-temperature environments.

Scientists have found that the collision broadening of two absorption lines coupled can eliminate concentration variables. With this discovery, scientists can achieve concentration independent pressure measurements. Considering that the main product of combustion systems fueled by hydrocarbons is H2O, they validated this finding with two H-absorption lines, where H2O is located near 1343 nm and 1392 nm on a carefully designed heating absorption cell. The time resolution and uncertainty of pressure measurement are respectively 50 μ Realize at s and 3%.

Professor Liu Kun said, "Our findings provide valuable tools for pressure sensing in high-temperature environments and can promote the development of multi parameter diagnosis in laser based combustion science.".

Source: Laser Net

Related Recommendations

  • Nankai University makes progress in the field of free electron photon interactions

    Recently, a research team led by Professor Cai Wei and Professor Xu Jingjun from the School of Physical Sciences at Nankai University has experimentally confirmed for the first time the generation of polaritons, also known as Smith Purcell radiation, at the two-dimensional scale, and further demonstrated the ability of free electrons to regulate two-dimensional Smith Purcell radiation. The researc...

    02-11
    See translation

  • POSTECH launches a new type of fiber optic fusion splicer FS-23 series

    FOSTEC announced on the 8th that a new type of fiber fusion splicer has been launched. The newly launched FS-23 series is a fusion splicer that can be used for fiber optic operations in long-distance optical networks and CCTV optical networks. It not only has a small size and light weight, but also has a sturdy design and a long-lasting battery, which can provide high-precision performance.A perso...

    2024-01-08
    See translation

  • Luxiner launches LXR ultra short pulse laser platform

    Luxiner, the global leader in laser technology, has launched LXR ® The ultra short pulse (USP) laser platform is a revolutionary leap in industrial laser processing. The LXR platform provides unparalleled performance, versatility, and reliability, making significant progress in burst mode processing. Micro Miracle MasterThe world of miniaturization is flourishing due to the continuous improvemen...

    2024-06-11
    See translation

  • Progress in the research and development of high-performance electrically pumped topology lasers in semiconductor manufacturing

    Topological laser (TL) is an ideal light source for future new optoelectronic integrated chips, designed and manufactured using topological optics principles to obtain robust single-mode lasers. Electrically pumped topology lasers have become a research hotspot due to their small size and ease of integration, but topology lasers based on electrical injection are still in the early stages of resear...

    2024-07-11
    See translation

  • Breaking the production record! Laser and lithium achieve ammonia production under environmental conditions for the first time

    The application of laser technology has revolutionized the methods of nitrogen fixation, providing a new method for synthesizing ammonia under environmental conditions. Recently, researchers have used commercial carbon dioxide lasers for the first time to disrupt the nitrogen nitrogen triple bond, providing a new green alternative to the Haber Bosch process.It is reported that the international re...

    2023-10-16
    See translation