chanelink logo
CHANELINK
English

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

1020
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

  • Researchers have created the first organic semiconductor laser to operate without the need for a separate light source

    OLED is located at the top and is formed by an organic layer between the contacts. Apply voltage to it, inject charge and generate light, which in turn excites organic laser. Organic lasers contain a grating that can generate feedback and diffract some of the laser out of the structure.Organic laserResearchers have created the first organic semiconductor laser to operate without the need for a sep...

    2023-11-29
    See translation

  • Tesla Intelligent Robot Vacuum Laser AI200 has a maximum operating time of 130 minutes

    In most cases, devices that are part of so-called smart homes have become a part of our lives. These appliances have a significant impact on our comfort level and contribute to daily household chores, such as cleaning. There are many products in the market that have paved the way in this regard, but the amount we usually have to pay for them effectively prevents us from purchasing.Of course, we ca...

    2023-11-10
    See translation

  • Application of Multipurpose Femtosecond Laser Interferometry in High Precision Silicon Nanostructures

    Researchers from the Laser Processing Group of the IO-CSIC Institute of Optics in Spain report on the application of multi-purpose femtosecond laser interference in high-precision silicon nanostructures. The related research was published in Optics&Laser Technology with the title "Versatile femtosecond laser interference pattern applied to high precision nanostructured of silicon".Highlights:...

    2024-07-10
    See translation

  • LightSolver announces the launch of the LPU100 laser computing system

    LightSolver, a laser based computing company, announced that it is a breakthrough in quantum inspired high-performance computing.Its LPU100 system utilizes the power of 100 lasers to solve optimization problems, challenging the processing time of quantum and supercomputers. The laser array of LPU100 represents 100 continuous variables and can solve up to 120100 combinations of problems, enabling ...

    2024-03-22
    See translation

  • The new Casiris H6 4K UST tricolor laser projector is about to be launched through Indiegogo

    Casir is about to launch the H6 4K UST tricolor laser projector through Indiegogo. The new laser projector has a brightness of up to 3000 ANSI lumens and a BT.2020 color gamut coverage of 110%. It is an ultra short focus projector that runs on Android TV.The Casiris H6 4K UST tricolor laser projector is a brighter and more accurate version of the Casiris A6. It also has greater image projection ca...

    2023-09-18
    See translation