Resonance gas oscillations in closed tubes: Numerical study and experiments
Resonance gas oscillations in closed tubes: Numerical study and experiments
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DOI：
10.1063/1.1613645
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发表时间：
2003-09
影响因子：
4.6
通讯作者：
A. Alexeev;C. Gutfinger
中科院分区：
文献类型：
--
作者：
A. Alexeev;C. Gutfinger
对封闭管内气体的周期性振荡进行了实验研究和数值模拟。在共振时，这些振荡伴随着冲击波沿管沿着来回行进。气体温度和压力的测量结果的报告。发现气体温度沿着管方向变化很大。本文建立了一个二维湍流气体振荡的数值模型，并通过与实验的比较进行了验证。计算结果表明，该数值模型能较好地关联谐振管内温度和压力的实验数据。利用数值模型，研究了共振时的湍流和声流。结果表明，共振时气体流动的方向与非共振时相反。根据管参数e、声学雷诺数Rea和无量纲管长Λ对共振流进行了参数化研究。特别是，它被发现，归一化的压力振幅，…
Periodic gas oscillations in closed tubes are investigated experimentally and numerically. At resonance, these oscillations are accompanied by shock waves traveling back and forth along the tube. Results of gas temperature and pressure measurements are reported. It is found that the gas temperature changes substantially along the tube. A two-dimensional numerical model of turbulent gas oscillations is developed and verified by a comparison with experiments. It is found that the experimental data of temperature and pressure inside the resonance tube are well correlated by the numerical model. Using the numerical model, turbulence and acoustic streaming at resonance are investigated. It is shown that the direction of gas streaming at resonance is opposite to that in nonresonant oscillations. A parametric investigation of resonant flow is performed in terms of the tube parameter e, acoustic Reynolds number Rea and dimensionless tube length Λ. In particular, it is found that the normalized pressure amplitude,...