降低频率对马赫数 M = 1.75 时锥球体自激振荡运动学的影响

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-12-13 DOI:10.1134/S0869864324030053

E. A. Chasovnikov

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引用次数: 0

摘要

在超音速风洞中对带有后半球形部分的流线型圆锥体进行了测试，在马赫数 M = 1.75 的条件下，沿俯仰角自由摆动，并计算了几个体惯性矩值（相对于旋转轴计算）。在所有测试中，瞬态过程结束后，记录了锥体的无阻尼振动，振幅取决于降低的频率。无阻尼振动振幅与降低频率的关系表现出明显的共振行为。

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Effect of reduced frequency on kinematics of self-excited oscillations for a conical-spherical body at Mach number M = 1.75

Tests of a streamlined cone with a rear hemispherical part were carried out in a supersonic wind tunnel using an installation of free oscillations along the pitch angle at Mach number M = 1.75 and for several values of the body inertia moment (calculated relative to the axis of rotation). In all tests, after the completion of the transient process, undamped oscillations of the cone were recorded with an amplitude depending on the reduced frequency. The dependence for the of undamped oscillation amplitude on the reduced frequency exhibits a pronounced resonant behavior.

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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.