气泡水体携带能力的测量实验研究(英文)  

Experimental studyon capacityof bubble to carrywater

作　　者：王涌[1] 金良安[1,2] 迟卫[1] 曲翊[1,2] 

机构地区：[1]海军大连舰艇学院航海系,辽宁大连116018 [2]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《实验流体力学》2013年第2期8-13,共6页Journal of Experiments in Fluid Mechanics

基　　金：Supported by National Hydrodynamics Fund(Grant No.51314020103)

摘　　要：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。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.

关 键 词：水中气泡 携带水量 双液分离 转相测量 

分 类 号：O359.1[理学—流体力学]