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首页> 外文期刊>International Journal of Heat and Fluid Flow >Vertically upward two-phase flow with a highly viscous liquid-phase in a nozzle and orifice plate
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Vertically upward two-phase flow with a highly viscous liquid-phase in a nozzle and orifice plate

机译：喷嘴和孔板中具有高粘度液相的垂直向上的两相流

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摘要

Water and glycerine were used to produce solutions with nominal liquid viscosities of 1, 100, 250 and 550 mPas. These liquids flowed concurrently with air into a conical nozzle. Measurements of discharge momentum fluxes, inlet void fractions and pressure drops were made for subsonic and sonic discharges. Liquids with nominal liquid viscosities of 1 and 450 mPa s were used to do similar tests on a sharp edged orifice plate. The orifice had the same discharge diameter as the nozzle. The flow pattern developed in the long supply pipe was annular up flow. The nozzle data are shown to be consistent with the annular flow model provided the wall and interfacial shear stresses are included. The orifice plate is shown to behave in a similar manner to the nozzle, despite the very different flow path.
机译：水和甘油用于生产标称液体粘度分别为1、100、250和550 mPas的溶液。这些液体与空气同时流入锥形喷嘴。对亚音速和声速放电进行了排放动量通量，入口空隙率和压降的测量。使用标称液体粘度为1和450 mPa s的液体在锋利的孔板上进行类似的测试。孔口具有与喷嘴相同的排出直径。长供给管中形成的流型为环形上升流。如果包括壁和界面剪应力，则表明喷嘴数据与环形流动模型一致。尽管孔道非常不同，但孔板仍表现出与喷嘴相似的性能。

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