空间发展喷流中静态扰动的发展

IF 1 4区工程技术 Q4 MECHANICS

Fluid Dynamics Pub Date : 2024-11-07 DOI:10.1134/S0015462824603085

D. A. Ashurov, N. V. Nikitin

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引用次数: 0

摘要

在雷诺数 Re = 2850 的条件下，对圆形射流中静止三维扰动的非模式发展进行了数值研究。再现了早先在莫斯科国立大学力学研究所进行的实验室实验的运行条件。在下游发展主流的条件下，开发了一种计算最佳扰动的方法。计算了与不同方位角数相关的扰动。确定了最佳扰动的形状、发展特征和增长程度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Development of Stationary Disturbances in a Spatially Developing Jet

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Development of Stationary Disturbances in a Spatially Developing Jet

Nonmodal development of stationary three-dimensional disturbances in a circular jet is numerically investigated at the Reynolds number Re = 2850. The operating conditions of a laboratory experiment performed earlier in the Institute of Mechanics of Moscow State University are reproduced. A method for calculating optimal disturbances under the conditions of downstream developing main flow is developed. The disturbances associated with different azimuthal numbers are calculated. The shape, character of development, and growth degree of optimal disturbances are determined.

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来源期刊

Fluid Dynamics MECHANICS-PHYSICS, FLUIDS & PLASMAS

CiteScore

1.30

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.