chanelink logo
CHANELINK
Türkçe

Pressure sensing using dual color laser absorption spectroscopy

219
2024-03-09 13:58:51
Çeviriyi gör

The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.

The results of this study have been published in Optics Letters.
Aircraft engines are transitioning towards high-temperature and high-pressure combustion to improve thermodynamic efficiency. Pressure is a key parameter for monitoring engine performance and diagnosing engine faults. However, traditional contact pressure sensors can disrupt combustion flow and are limited by the temperature tolerance of the sensor material.

The researchers of this study designed a non-contact pressure sensing technology for high-temperature environments and tested it at temperatures up to 1300 K. This study mainly addresses the challenge of considering the influence of molecular concentration on gas pressure measurement in such an environment.

Researchers have found that by connecting double absorption lines to widen the collision line width, concentration variables can be alleviated. This breakthrough enables researchers to achieve concentration independent pressure measurements.

To verify this discovery, considering that the main product of hydrocarbon fuel combustion systems is H2O, the team used double absorption lines of H2O near 1343 nm and 1392 nm in a precisely designed heating absorption cell. They each achieved 50 μ S and 3% time resolution and pressure measurement uncertainty.

Source: Laser Net

İlgili öneriler

  • Scientists have developed a solar cell that can bend and soak in water

    Researchers and their partners at the RIEKN Creative Physical Science Research Center have created a flexible and waterproof organic photovoltaic film. This innovative thin film can integrate solar cells into clothing, maintaining functionality even in rainwater or washing cycles.One of the potential uses of organic photovoltaic technology is to manufacture wearable electronic devices that can be ...

    2024-05-08
    Çeviriyi gör

  • Nature Photonics | New Comb Laser Assists Stable and Efficient Generation of Multi wavelength Signals

    Recently, researchers have developed a comb laser with higher stability and efficiency. The use of synthetic reflection self injection locking micro comb design enables the laser to achieve stability and increase conversion efficiency by more than 15 times. This efficient, stable, and easy to manufacture design is expected to make rapid progress in fields such as portable sensors, autonomous navig...

    2024-03-02
    Çeviriyi gör

  • NUBURU will enter a new stage of diversified development

    Recently, NUBURU, a global developer of high-power and high brightness industrial blue light laser technology, announced the signing of a strategic commitment letter, officially launching a deep layout in the field of national defense and security. This transformation plan covers capital restructuring, technology mergers and acquisitions, and management team upgrades, marking a new stage of divers...

    02-26
    Çeviriyi gör

  • Tsinghua University has made progress in the field of magnetic field and laser composite processing

    The National Key Laboratory of Interface Science and Technology for High end Equipment at Tsinghua University has made progress in the field of magnetic field and laser composite processing - magnetic field assisted laser shock strengthening of Ti6Al4V alloy. The relevant research was published as a cover article titled "Magnetic Field Assisted Laser Shock Peening of Ti6Al4V Alloy" in the journal ...

    2023-09-16
    Çeviriyi gör

  • The creator of a computer that uses lasers to perform complex tasks at the speed of light has announced a breakthrough in high-performance computing

    LightSolver's new LPU100 system is powered by 100 lasers and can solve the most challenging problems through up to 120100 combinations.This computer was created by Dr. Ruti Ben Shlomi, CEO of LightSolver and Dr. Chen Tradonsky, CTO, a physicist at the Rehowatt Weizmann Institute for Science.It is not suitable for household use because its high computing power exceeds individual needs, but it is su...

    2024-03-21
    Çeviriyi gör