发表机构
Boston University（波士顿大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过周期性加热产生振荡热毛细管流，稳定微重力下的液体镜面，并利用多尺度分析与线性稳定性分析，验证了米级表面变形在数天内可被稳定。
AI 中文摘要
我们研究了在微重力环境下，如何利用空间均匀、时间调制的加热来稳定薄液体镜面。周期性加热产生振荡的热毛细管流，抑制了持续加热相关的不稳定性，使得自由表面能够在热辐射、热毛细管输运和毛细作用的联合作用下松弛。通过对长波模型进行多尺度分析，我们推导出多个加热周期内耦合的表面温度演化。随后的线性稳定性分析给出了各个表面模式的稳定性准则和衰减时间。数值模拟验证了分析预测，并展示了在数天时间尺度上稳定米级表面变形的能力。
英文摘要
We investigate how spatially uniform, time-modulated heating can be used to stabilize a thin liquid mirror in microgravity. Periodic heating generates oscillatory thermocapillary flows that suppress the instability associated with sustained heating, allowing the free surface to relax through the combined effects of thermal radiation, thermocapillary transport, and capillarity. Using multiple-scale analysis of a long-wave model, we derive the coupled surface-temperature evolution over many heating cycles. A subsequent linear stability analysis yields the stability criteria and decay times of individual surface modes. Numerical simulations validate the analytical predictions and demonstrate stabilization of meter-scale surface deformations over timescales of days.
