Field Measurements of Mean Velocity Characteristics of a Large-Diameter Swirling Jet
Field Measurements of Mean Velocity Characteristics of a Large-Diameter Swirling Jet
复制标题
大直径旋流射流平均速度特性的现场测量
DOI：
10.1061/(asce)hy.1943-7900.0000207
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发表时间：
2010
影响因子：
2.4
通讯作者：
J. Brookes
中科院分区：
文献类型：
--
作者：
David Lewis;M. Lambert;M. Burch;J. Brookes
在等温和分层条件下，利用声学多普勒测速仪对浮筏轴向混合螺旋桨通过尾水管排放产生的大直径湍流旋转射流中的径向、轴向和切向流动分量进行了全尺寸现场测量。将计算结果与经典射流理论进行了比较，结果表明，虽然在建立流区有相似的行为，但在流动建立区有明显的差异。结果表明，由于射流尺寸和旋转特性的影响，传统的射流理论不能很好地描述轴流混合螺旋桨的喷流特性。
Full-scale field acoustic Doppler velocimeter measurements of the radial, axial, and tangential flow components were undertaken in a large-diameter turbulent swirling jet generated by a raft-mounted axial flow-mixing propeller discharging through a draft tube during isothermal and stratified conditions. The results were compared with classical jet theory and showed significant differences in the zone of flow establishment though similar behavior in the zone where established flow was found. It was concluded that the efflux from the axial flow-mixing propeller could not be described adequately by conventional jet theory due to the jet size and swirling characteristics.