chanelink logo
CHANELINK
Türkçe

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

392
2024-03-08 14:11:01
Çeviriyi gör

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

İlgili öneriler

  • Using high-speed scanning remelting technology to achieve AlSi10Mg laser powder bed fusion with excellent strength and plasticity properties

    The development of additive manufacturing (AM) has profoundly changed the manufacturing industry, and this technology has been applied in fields such as food, medicine, automotive, and electronic components. Especially in the aerospace field, where extremely lightweight and high-strength (~500mpa) components are required, aluminum alloy additive manufacturing is considered a very promising solutio...

    2024-10-08
    Çeviriyi gör

  • Narrow band tunable terahertz lasers may change material research and technology

    A group of researchers from the Max Planck Institute for Material Structure and Dynamics in Germany explored the effect of manipulating the properties of quantum materials far from equilibrium through customized laser drivers. They found a more effective method to create previously observed metastable superconducting states in fullerene based materials using lasers.By tuning the light source to 10...

    2023-11-21
    Çeviriyi gör

  • Lameditech of South Korea was listed on the KOSDAQ exchange on the 17th

    On June 11, 2024, Korean laser medical equipment manufacturer Lameditech successfully completed its initial public offering and was listed on the KOSDAQ exchange on the 17th.Last month, its public offering price was fixed at 16000 Korean won. In this public offering, Lameditech issued a total of 1298000 shares, raising approximately 20.8 billion Korean won. Since Lameditech's debut on KOSDAQ, as o...

    2024-06-26
    Çeviriyi gör

  • Researchers Obtaining Scientific Returns from Raman Spectroscopy for External Bioexploration Using Lasers

    We investigated the potential of laser selection in a wide optical range from ultraviolet to visible light, and then to infrared (excitation wavelengths of 325, 532, 785, and 1064 nm), in order to combine and analyze extreme microorganisms related to Earth (such as Cryptomeria elegans, cold floating nematodes, and circular green algae), carbon water compound molecules, as well as simulated mineral...

    2023-10-23
    Çeviriyi gör

  • Hyperspectral imaging technology: a comprehensive guide from principles to applications

    Hyperspectral imaging technology is a highly anticipated innovation in the field of science and engineering today. It not only integrates spectroscopy and imaging technology, but also has wide applications in various industries and research fields. This article will delve into the basic principles, working mechanisms, and applications of hyperspectral imaging in different fields.Introduction to hy...

    2024-04-16
    Çeviriyi gör