Study of the structure of turbulent underexpanded supersonic jets by laser transillumination

3区物理与天体物理 Q1 Engineering

Waves in Random and Complex Media Pub Date : 2023-11-02 DOI:10.1080/17455030.2022.2061083

Dimitriy A. Marakasov, Victor A. Banakh, Artem A. Sukharev, Ruvim Sh. Tsvyk

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Abstract

AbstractThe paper analyzes the spatial distribution of the average air density in a supersonic jet based on the results of laser transillumination. The algorithm to retrieve the average air density from transverse (to the jet axis) deviations of the transilluminating wavefront was tested in experiments on the Vertical jet setup of ITAM SB RAS. The results of retrieval are compared with the known literature data of contact measurements and with results of numerical simulation. The good sensitivity of local wavefront tilts to oscillations in the air density at frequencies of discrete acoustic tones has been demonstrated. This opens up the possibility of experimental study of the spatial structure of air density inhomogeneities in the jet channel.KEYWORDS: Supersonic jetlaser transilluminationwavefront distortionsair densityreconstruction AcknowledgementsThe authors are grateful to the colleagues of the ITAM SB RAS: Dr. V.I. Zapryagaev, Dr. N.P. Kiselev, and V.V. Bashurov for their help in organizing the experiment.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis work was supported by the Ministry of Science and Higher Education of the Russian Federation (V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences).

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湍流欠膨胀超音速射流结构的激光透照研究

摘要基于激光透照结果，分析了超声速射流中平均空气密度的空间分布。在ITAM SB RAS的垂直射流装置上进行了实验，验证了从透光波前的横向(向射流轴)偏差提取平均空气密度的算法。检索结果与已知的接触测量文献数据和数值模拟结果进行了比较。在离散声波频率下，局部波前倾斜对空气密度的振荡具有良好的灵敏度。这为实验研究射流通道中空气密度不均匀性的空间结构提供了可能。致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢披露声明作者未报告潜在的利益冲突。本工作得到了俄罗斯联邦科学和高等教育部(俄罗斯科学院西伯利亚分院V.E. Zuev大气光学研究所)的支持。

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来源期刊

Waves in Random and Complex Media 物理-物理：综合

自引率

0.00%

发文量

677

审稿时长

3.0 months

期刊介绍： Waves in Random and Complex Media (formerly Waves in Random Media ) is a broad, interdisciplinary journal that reports theoretical, applied and experimental research related to any wave phenomena. The field of wave phenomena is all-pervading, fast-moving and exciting; more and more, researchers are looking for a journal which addresses the understanding of wave-matter interactions in increasingly complex natural and engineered media. With its foundations in the scattering and propagation community, Waves in Random and Complex Media is becoming a key forum for research in both established fields such as imaging through turbulence, as well as emerging fields such as metamaterials. The Journal is of interest to scientists and engineers working in the field of wave propagation, scattering and imaging in random or complex media. Papers on theoretical developments, experimental results and analytical/numerical studies are considered for publication, as are deterministic problems when also linked to random or complex media. Papers are expected to report original work, and must be comprehensible and of general interest to the broad community working with wave phenomena.