chanelink logo
CHANELINK
日本語

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

506
2024-03-08 14:11:01
翻訳を見る

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

関連のおすすめ

  • Launching the world's strongest laser at a cost of 320 million euros

    Beijing, April 1st (Reporter Liu Xia) - The world's most powerful laser has been activated recently. On March 31st, the Physicist Organization Network reported that the system can enable laser pulses to reach a peak of 10 terawatts (1 terawatt=100 terawatts=1015 watts) within 1 femtosecond (1000 trillions of a second), which is expected to promote revolutionary progress in multiple fi...

    2024-04-03
    翻訳を見る

  • Top management changes at Laser Photonics Corp., a US laser equipment manufacturer

    Recently, Laser Photonics Corp. (LPC), a Nasdaq listed equipment developer, announced that it has appointed John T. Armstrong as its new Executive Vice President. Before assuming his position at LPC, Armstrong served as Vice President of Astronics Test Systems, a subsidiary of Astronics Corporation, a global leader in advanced technology and products in critical mission areas such as aerospace a...

    2024-11-20
    翻訳を見る

  • 20 million dollars! Undersea fiber optic agreement reached, fully operational by 2026

    Recently, Confluence Networks LLC has announced a long-term partnership agreement with Laser Light Communications Inc., a developer and provider of software controlled optical network services.According to the agreement, Laser Light will adopt Confluence-1 submarine fiber optic network, which Confluence Networks is about to launch, as the core part of its global network. The protocol will last for...

    2024-05-24
    翻訳を見る

  • Researchers successfully 3D printed polymer based robotic arms through laser scanning

    Researchers from the Federal Institute of Technology in Zurich and an American startup used slow curing plastic to develop durable and sturdy robots using high-quality materials.The team can now print these complex robots at once and combine soft, elastic, and rigid materials together. This allows for the creation of precision structures and parts with cavities as needed.Inkbit, a derivative compa...

    2023-11-16
    翻訳を見る

  • Coherent launches 532 nm HyperRapid NXT picosecond laser for ultra precision manufacturing of thin film solar cells

    The leader of material processing industry lasers, Cohen Corporation, announced yesterday the launch of its new HyperRapid NXT industrial picosecond laser, with a working wavelength of 532 nm and an average power of 100 W, which can achieve ultra precision manufacturing of thin film solar cells.The second generation solar cells, which are expected to achieve a leap in energy efficiency, are mainly...

    2024-01-25
    翻訳を見る