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<p>Fluid flow and phase-change processes under variable-gravity are of significant scientific interest in space science, thermal control engineering and planetary exploration. However, current variable and micro-gravity experiments mainly rely on space stations or parabolic flights, which are limited by short experimental durations, high costs, and restricted repeatability. To overcome these limitations, this study develops a ground-based experimental approach on diamagnetic levitation. Deionized water is adopted as the working fluid in a strong magnetic field to conduct representative variable-gravity experiments, including single-droplet levitation, liquid bridge formation, capillary flow, and boiling. The experimental results show that: in the single-droplet levitation experiment, stable levitation can be achieved when the central magnetic field reached 23.28&#xa0;T. In the capillary rise experiment under typical gravity conditions, the maximum deviation between the measured liquid height and the theoretical prediction is 5.25%. In the liquid bridge experiment, the difference between the measured maximum diameter and the theoretical prediction is only 0.07&#xa0;mm. In the boiling experiment, distinct boiling behaviors are successfully observed under different effective gravity levels. It can also be used to construct simulated gravity experimental conditions on the surfaces of planets such as the Moon and Mars. These results demonstrate that the proposed experimental approach enables stable, long-duration, high-precision, and cost-effective simulation of micro/reduced-gravity environments. This work establishes a ground-based diamagnetic gravity-compensation facility that enables controlled studies of fluid flow and phase-change heat transfer in diamagnetic fluids under magnetically compensated effective gravity conditions, offering valuable insights for space and planetary thermal-fluid applications.</p>

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Experimental Investigation of Diamagnetic Fluids With Magnetically Compensated Effective Gravity

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Shifeng Lin,
  • Xu Zhang,
  • Shensen Feng,
  • Huiying Wu,
  • Zhenyu Liu,
  • Zhen Fang,
  • Chuanying Xi,
  • ShengXian Huang

摘要

Fluid flow and phase-change processes under variable-gravity are of significant scientific interest in space science, thermal control engineering and planetary exploration. However, current variable and micro-gravity experiments mainly rely on space stations or parabolic flights, which are limited by short experimental durations, high costs, and restricted repeatability. To overcome these limitations, this study develops a ground-based experimental approach on diamagnetic levitation. Deionized water is adopted as the working fluid in a strong magnetic field to conduct representative variable-gravity experiments, including single-droplet levitation, liquid bridge formation, capillary flow, and boiling. The experimental results show that: in the single-droplet levitation experiment, stable levitation can be achieved when the central magnetic field reached 23.28 T. In the capillary rise experiment under typical gravity conditions, the maximum deviation between the measured liquid height and the theoretical prediction is 5.25%. In the liquid bridge experiment, the difference between the measured maximum diameter and the theoretical prediction is only 0.07 mm. In the boiling experiment, distinct boiling behaviors are successfully observed under different effective gravity levels. It can also be used to construct simulated gravity experimental conditions on the surfaces of planets such as the Moon and Mars. These results demonstrate that the proposed experimental approach enables stable, long-duration, high-precision, and cost-effective simulation of micro/reduced-gravity environments. This work establishes a ground-based diamagnetic gravity-compensation facility that enables controlled studies of fluid flow and phase-change heat transfer in diamagnetic fluids under magnetically compensated effective gravity conditions, offering valuable insights for space and planetary thermal-fluid applications.