Abstract The lift force acting on an ellipsoidal bubble is known to change its sign, depending on the bubble aspect ratio. The lift reversal has often been modeled in terms of the Eotvos number defined by using the bubble major axis to account for the deformation effect on the negative lift component. This paper presents a physically reliable scaling accounting for the two mechanisms in competition related to the two sources of vorticity: the lift controlled by the shear flow and contribution from the interfacial vorticity source. This scaling is used for developing a correlation that makes possible the lift modeling with the reversal.

中文翻译：

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线性剪切流中清洁椭球气泡的升力系数

摘要 已知作用在椭圆形气泡上的升力会根据气泡纵横比改变其符号。升力反转通常根据 Eotvos 数进行建模，该数定义为使用气泡长轴来解释对负升力分量的变形影响。本文提出了一种物理上可靠的比例，解释了与两个涡度源相关的竞争中的两种机制：由剪切流控制的升力和来自界面涡度源的贡献。此缩放用于开发相关性，使具有反转的升力建模成为可能。