本文在入口条件为弹环状流的条件下,考察了氮气-水两相流在水力直径为0.5 mm的水平等径冲击型三通中的相分配特性.根据入口与两个分支夹角的不同,冲击型三通分为T型冲击三通和Y型冲击三通.结果发现:相分配受入口流型的影响因冲击角而异.对于T型三通,入口流型对相分配的影响较小;而对于Y型三通,随着入口条件从靠近弹状流区域过渡到靠近环状流区域,相分配往等干度分配线靠近.变动冲击角对气液两相流的相分配有一定的影响,影响程度因入口条件而异.
The present work studies the phase splitting characteristics of water-nitrogen slug-annular flow at equal-sided impacting junctions with diameter of 0.5 mm.Impacting junctions may be divided into T-shaped junction and Y-shaped junction according to the different impacting angles between the inlet and either branch.The test results show that the effect of inlet flow patterns on phase split depends on the impacting angles.For the case of the impacting T-shaped junction,the effect of inlet flow patterns on phase split is small.However,for the case of impacting Y-shaped junctions,the phase splitting curve moves towards the equal splitting line as the inlet flow pattern shifts from the zone close to slug flow to the zone close to annular flow.In addition,the impacting angles have influence on phase split,but the influence is dependent on inlet flow conditions.
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