Investigation of the dynamics of large eddies in the near zone of an axisymmetric free jet in the case with local pulsed injection in the coaxial and transverse directions

IF 0.6 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2026-02-13 DOI:10.1134/S0869864325020076

M. I. Sorokin, D. A. Kushnarev, M. P. Tokarev, V. M. Dulin

引用次数: 0

Abstract

Optical diagnostics of the three-dimensional structure of large eddies in the near zone of a turbulent jet (at Re = 5000) exhausting from a round nozzle is performed in the case with coaxial periodic disturbances of the flow through annular slots at the nozzle edge and through holes in the internal surface of the nozzle in the transverse direction. The external action leads to rapid turbulization of the flow near the nozzle edge due to generation of large extended toroidal vortices in the case of coaxial disturbances and due to significant reconstruction of the flow with rapid disintegration of the jet core in the case of transverse disturbances.

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同轴和横向局部脉冲注入轴对称自由射流近区大涡流动力学研究

本文对圆形喷嘴喷出的湍流射流（Re = 5000）近区大涡流的三维结构进行了光学诊断，该湍流射流在喷嘴边缘的环形槽和喷嘴内表面的孔的横向方向上存在同轴周期性扰动。外部作用导致喷嘴边缘附近的流动快速湍流化，这是由于在同轴扰动的情况下产生了大量扩展的环面涡，以及在横向扰动的情况下，由于射流核心的快速解体而导致流动的显著重建。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.