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CHARACTERISTIC AND FORMATION MECHANISM OF TWO PHASE FLUID FLOW PATTERN IN MICRO THRUSTER
Author(s): 
Pages: 675-678
Year: Issue:  4
Journal: Journal of Engineering Thermophysics

Abstract: 针对以低浓度过氧化氢作为液体燃料的硅基微推进器,采用高速可视化手段考察过氧化氢分解形成的气液两相流在微喷嘴扩张段的流动特征.发现流型总体特点是泡状流型阶段和环状流型喷气阶段交替出现.在环状流喷气阶段,微喷嘴扩张段内的气液界面呈现特殊的瓶颈形结构,形成瓶颈形流型结构的微液滴在微喷嘴出口处往复运动,形成单向止回阀效应,使得环状流喷气过程呈现周期性间断的特点.
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