关于段锥模型在马赫M = 2.3时的动力阻尼系数。

IF 0.4 Q4 MATHEMATICS

Journal of Siberian Federal University-Mathematics & Physics Pub Date : 2022-04-15 DOI:10.25205/2541-9447-2022-17-1-34-46

N. Adamov, N. A. Mishchenko, E. A. Chasovnikov

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引用次数: 1

摘要

为了描述在М = 2马赫数条件下横杆上的截面锥模型振动幅值的非线性行为，采用了阻尼导数的多项式函数。四次多项式作为粘滞阻尼的函数，允许描述实验中观察到的两个极限环。确定了多项式的系数，并与所提出的动力学方程的直接数值解显示出充分的一致性。

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About the Dynamic Damping Coefficients of a Segmental-Cone Model at Mach M = 2.3.

In order to describe the nonlinear behavior of oscillation amplitude of the segmental-conical model on a transversive rod setup in a wind tunnel at Mach М = 2, a polynomial function of damping derivatives was used. Polynom of the 4th degree as a function of viscous damping allowed to describe two limit cycles observed in experiments. Coefficients of the polynom were determined and showed sufficient agreement with a direct numerical solution of the proposed dynamic equation.

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来源期刊

Journal of Siberian Federal University-Mathematics & Physics MATHEMATICS-

CiteScore

0.90

自引率

0.00%

发文量