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利用水模拟实验，研究了ＡＣＲＴ（坩埚加速旋转技术）过程中Ｅｋｍａｎ流场的稳定性，及其与坩埚内径Φ，转速最大差值△ωｍａｘ，及坩埚中液体高度Ｈ的关系。结果表明，当雷诺数Ｒｅ＝０．６７８Ｒ（｜△ωｍａｘ｜／ｖ）０．５≤ＲｅＣｌ（下临界值）时，Ｅｋｍａｎ流场稳定；Ｒｅ≥ＲｅＣ２（上临界值）时，减速过程的Ｅｋｍａｎ流场完全不稳定。当Ｒｅ≤ＲｅＣｌ时，Ｅｋｍａｎ流区的高度ｈ随Φ及△ωｍａｘ增加而增加，Ｅｋｍａｎ流区相对高度ｈ／Ｒ（Ｒ＝０．５Φ）与Ｒｅ２呈线性关系，直线的斜率ｋ与Ｒ有关；当坩埚中液柱高度Ｈ减小到某一临界值Ｈ时，Ｅｋｍａｎ流区随Ｈ的减小而减小。
Using water simulation experiment, the stability of Ekman flow field during ACRT and its relationship with the inner diameter Φ of the crucible, the maximum speed difference Δωmax and the liquid height H in the crucible were studied. The results show that the Ekman flow field is stable when Reynolds number Re = 0.678R (| Δωmax | / v) 0.5≤ReCl (lower critical value), and Ekman The flow field is completely unstable. When Re≤ReCl, the height h of Ekman flow zone increases with the increase of Φ and △ ωmax. The relative height h / R (R = 0.5Φ) of Ekman flow zone has a linear relationship with Re2. The slope k of the straight line is related to R; When the height H of the liquid column in the crucible decreases to some critical value H, the Ekman flow area decreases with decreasing H.