Experiments and long-term high-performance computations on amplitude modulations of strato-rotational flows,Geophysical & Astrophysical Fluid Dynamics

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Experiments and long-term high-performance computations on amplitude modulations of strato-rotational flows
Geophysical & Astrophysical Fluid Dynamics ( IF 1.3 ) Pub Date : 2020-07-30 , DOI: 10.1080/03091929.2020.1795647
G. Meletti _{1,

2} , S. Abide ₃ , S. Viazzo ₂ , A. Krebs ₁ , U. Harlander ₁

Affiliation

The present paper describes a combined experimental and high performance computing study of new specific behaviors of the Strato-Rotational Instability (SRI). The confrontation of low frequency Particle Image Velocimetry (PIV) experimental data with Direct Numerical Simulations reveal new non-linear phenomena and patterns not yet observed in the SRI, that can contribute for our understanding of astrophysical flows, specially regarding phenomena related to accretion disk theories. The experiment designed to investigate these SRI related phenomena consists of a classical Taylor-Couette (TC) system with two concentric cylinders that can rotate independently under stable density stratification due to temperature gradients imposed in the axial direction. In the present investigations, Froude numbers are between 1.5

中文翻译：

平流旋流幅度调制的实验和长期高性能计算

本论文描述了对平流旋转不稳定性 (SRI) 的新特定行为的结合实验和高性能计算研究。低频粒子图像测速 (PIV) 实验数据与直接数值模拟的对比揭示了 SRI 中尚未观察到的新非线性现象和模式，这有助于我们理解天体物理流，特别是与吸积盘理论相关的现象. 旨在研究这些 SRI 相关现象的实验包括一个经典的 Taylor-Couette (TC) 系统，该系统具有两个同心圆柱体，由于轴向施加的温度梯度，这些圆柱体可以在稳定的密度分层下独立旋转。在目前的调查中，弗劳德数在 1.5

更新日期：2020-07-30

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