chanelink logo
CHANELINK
Italiano

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

143
2024-03-08 14:11:01
Vedi traduzione

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

Raccomandazioni correlate

  • Professor Wu Dong's team at the University of Science and Technology of China created a "dancing microrobot" using femtosecond laser composite materials.

    It was learned from the University of Science and Technology of China that the team of Professor Wu Dong of the Micro and Nano Engineering Laboratory of the school proposed a femtosecond laser two-in-one multi-material processing strategy, manufactured a micromechanical joint composed of temperature-sensitive hydrogel and metal nanoparticles, and then developed a multi-joint humanoid micromachine ...

    2023-08-11
    Vedi traduzione

  • Based on Transform Optics: Realizing an Ideal Omnidirectional Invisible Cloak in Free Space

    A team led by Professor Ye Dexin and Professor Chen Hongsheng from Zhejiang University, as well as Professor Yu Luo from Nanyang University of Technology, conducted practical research on full parameter transformation optical devices. The research team has designed and implemented an all parameter omnidirectional invisibility cloak based on the theory of linear transformation optics and omnidirecti...

    2024-04-29
    Vedi traduzione

  • Laser&Photonics Reviews New Type Quartz Crystal Space Harmonic Modulation for Efficient Vacuum UV Laser

    Professor Zhang Huaijin and Yu Haohai from the Institute of Crystal Materials of Shandong University (the State Key Laboratory of Crystal Materials) proposed a spatial harmonic modulation strategy, which realizes the phase matching conditions that can be manipulated artificially in the new quartz crystal, and realizes the effective frequency doubling within the VUV range. The relevant research is ...

    2023-08-30
    Vedi traduzione

  • 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
    Vedi traduzione

  • Gas reduction technology of fiber laser helps to improve the cutting quality of low-carbon steel

    The Mitsubishi GX-F Advanced series of artificial intelligence enabled fiber lasers now use patented gas and burr reduction technology to help improve cutting quality while reducing gas consumption when cutting low-carbon steel.Mitsubishi Laser's proprietary Agr Mix nozzle technology does not require an external mixing tank or high-pressure oxygen. The combination of low-pressure air and nitrogen ...

    2024-02-14
    Vedi traduzione