气泡水体携带能力的测量实验研究

针对水中上升气泡对水体携带作用一直难以测量的问题，特提出利用气泡上升携带水量来表征其能力大小的思想，进而专门设计了相应的实验装置，重点开展了双液分离转相精测技术的实验研究。实验时选取柴油和水构成双液，并分别采用直接测量和转相精测两种方法测量气泡上升携带水量。结果表明：采用双液法可有效分离气泡携带的上升水体；气泡上升携带水量的转相精测值精度高于其直接测量值，且携带水量越小其精度优势越明显，特别是当携带水量很小，直接测量法可能因误差太大而根本无法实施，但转相精测法却可顺利进行。

Experimental study on capacity of bubble to carry water

In view of the difficulty to measure the capacity of bubble＇s carrying water, the vol- ume of up-flow water carried by bubbles, was adopted to characterize this capacity. A special ex- periment apparatus was designed, and the experimental study based on dual-liquid separation and phase-change measurement was carried out. In the experiment, dual-liquid was composed of wa- ter and diesel fuel, and the volume of separated up-flow water was measured by two methods： phase-change measurement and direct measurement respectively. Results show that up-flow wa- ter carried by bubble can be efficiently separated by dual-liquid, and the precision of phase-change method is obviously higher than that of direct method, especially in smaller volume system. Phase-change method can accurately offer the volume of up-flow water carried by bubbles, but di- rect method can not due to its big inherent error.