Multiphase flows management is a major challenge in many space applications given the different gravity levels involved. While many of the numerical investigations of liquid-gas phenomena deal with the radial bubble behavior and thus the heat exchange, only a few studies have been conducted on the translational motion of bubbles. We present a numerical investigation of the translational motion of gas bubbles immersed in a liquid that is subject to an acoustic wave at different gravity levels. In the computation, the equations for radial oscillation and translational motion are solved simultaneously. The dynamics of bubbles at different gravity levels (from microgravity to hypergravity) are discussed. Bubbles can be trapped by the acoustic wave at levitation positions in different scenarios. The dependence of the levitation position on the initial bubble position at different pressure amplitudes has been computed, giving rise to the bubble being directed to different nodes of the acoustic wave. The bubble radius also determines if and where the bubble levitates. We propose an analytical criterion for the capture of bubbles in a levitation position in terms of a new dimensionless parameter. The criterion is based on the balance between the average acoustic force and the buoyancy force. With the proposed criterion, the position of bubble levitation can be calculated analytically for any scenario.

鉴于所涉及的重力水平不同，多相流管理是许多空间应用中的主要挑战。虽然许多液气现象的数值研究涉及径向气泡行为以及热交换，但对气泡的平移运动进行的研究很少。我们对浸入在不同重力水平下受声波影响的液体中的气泡的平移运动进行了数值研究。在计算中，同时求解径向振动方程和平移运动方程。讨论了不同重力水平（从微重力到超重力）下气泡的动力学。在不同情况下，气泡可以在悬浮位置被声波捕获。已经计算了在不同压力幅度下悬浮位置对初始气泡位置的依赖性，导致气泡被引导到声波的不同节点。气泡半径还决定了气泡是否悬浮以及悬浮在何处。我们根据新的无​​量纲参数提出了一种在悬浮位置捕获气泡的分析标准。该标准基于平均声力和浮力之间的平衡。使用所提出的标准，可以针对任何场景分析计算气泡悬浮的位置。我们根据新的无​​量纲参数提出了一种在悬浮位置捕获气泡的分析标准。该标准基于平均声力和浮力之间的平衡。使用所提出的标准，可以针对任何场景分析计算气泡悬浮的位置。我们根据新的无​​量纲参数提出了一种在悬浮位置捕获气泡的分析标准。该标准基于平均声力和浮力之间的平衡。使用所提出的标准，可以针对任何场景分析计算气泡悬浮的位置。