It provides complete, authoritative coverage of the concepts, experimental techniques, and numerical modeling of multiphase flows.
它提供概念的完整，威权的新闻报导，多相的实验技术和数字模型流动。
The steady-state flows in drill pipe and in annulus are analyzed and the variations of pressure, gas void fraction, and multiphase-flow density along the well depth are simulated.
举例分析在环空和钻柱内的稳定流动过程中，随井深增加，压力、含气率、多相流体密度等的变化规律；
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