涡旋结构动力学:从行星到黑洞吸积盘

Dynamics Pub Date : 2024-05-13 DOI:10.3390/dynamics4020021
E. P. Tito, Vadim I. Pavlov
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引用次数: 0

摘要

宇宙流体(行星大气层,甚至黑洞吸积盘)中的热涡(亮点、球状物、漩涡)有时会被观测到聚集成准对称准静止群,但在模型中却被概念化为独立的项目。我们利用(分析)锐边界演化法和时空中旋转的 "薄 "流体层中的热涡流场通用模型(可能是弯曲的,也可能是平坦的)证明,这些热涡流可能不是独立的,而是代表一个单一、连贯、多瓣宏观结构中相互联系的部分。这种替代概念可能会影响数值模型和图像重建方法的设计。
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Dynamics of Vortex Structures: From Planets to Black Hole Accretion Disks
Thermo-vortices (bright spots, blobs, swirls) in cosmic fluids (planetary atmospheres, or even black hole accretion disks) are sometimes observed as clustered into quasi-symmetrical quasi-stationary groups but conceptualized in models as autonomous items. We demonstrate—using the (analytical) Sharp Boundaries Evolution Method and a generic model of a thermo-vorticial field in a rotating “thin” fluid layer in a spacetime that may be curved or flat—that these thermo-vortices may be not independent but represent interlinked parts of a single, coherent, multi-petal macro-structure. This alternative conceptualization may influence the designs of numerical models and image-reconstruction methods.
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