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在轨液体的排放将产生毫米级固态颗粒空间碎片,由于其升华耗散过程具有不确定性,若长期留轨将产生危害。文章以水为例,通过数值模拟对冰粒在轨升华过程进行分析。结果表明,冰粒的太阳吸收比是影响其升华的重要因素,采取措施提高颗粒的太阳吸收比和减少单个颗粒的平均质量都可有效加快颗粒的升华耗散。
In-orbit liquid emissions will produce millimeter-scale solid-state particle space debris, due to the uncertainty of its sublimation and dissipation process, if the long-term orbit will be harmful. Taking water as an example, the article analyzes the sublimation process of ice particles by numerical simulation. The results show that the solar absorption ratio of ice particles is an important factor affecting its sublimation. Measures taken to improve the solar absorption ratio of particles and reduce the average mass of individual particles can effectively speed up the sublimation and dissipation of particles.