VORTEX STRUCTURES IN SUPERSONIC JETS EXHAUSTING INTO A SUBMERGED SPACE

被引：0

作者：

Zaikovskii, V. N. ^{[1
]}

Kiselev, V. P. ^{[1
]}

Kiselev, S. P. ^{[1
]}

Belai, O. V. ^{[2
]}

Trubacheev, G. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Novosibirsk, Russia

[2] Russian Acad Sci, Inst Automat & Electrometry, Siberian Branch, Novosibirsk, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2024年 / 65卷 / 03期

关键词：

method of cold gas-dynamic spraying; slotted channel; supersonic jet; streamwise vortices; experiment; numerical simulation;

D O I：

10.1134/S0021894424030052

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Results of studying gas flows in a setup used for cold gas-dynamic spraying are reported. The setup consists of a cylindrical input channel with a central rod connected at a right angle with a rectangular slotted channel. Injection of a high-pressure gas through the input channel leads to gas acceleration. It is shown that there are velocity and pressure disturbances in a supersonic overexpanded jet exhausting from the channel, which arise due to the presence of compression and expansion waves, as well as streamwise vortices. The contribution of streamwise vortices to pressure and velocity disturbances is approximately 30%. Streamwise vortices are formed at the entrance of the slotted channel owing to the curvature of streamlines.

引用

页码：439 / 450

页数：12

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