Jets With Negative Buoyancy In Homogeneous Fluid
Jets With Negative Buoyancy In Homogeneous Fluid
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DOI：
10.1080/00221686709500209
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发表时间：
1967
影响因子：
2.3
通讯作者：
G. Abraham
中科院分区：
文献类型：
--
作者：
G. Abraham
在旋涡高度附近，即射流流体达到的最高高度，射流流体离开上行流区进入下行流区。因此在天花板附近，射流流体的垂直通量和射流携带的示踪剂的垂直通量随高度而减小。然而，先前发表的确定顶位坐标的理论解决方案（PRIESTLEY和BALL r11和MORTON 12J [3J]）是基于假设射流中所含示踪剂的垂直坐标从孔板到顶位是恒定的。这个假设导致示踪剂的浓度无穷大，或者在天花板水平处射流的宽度无穷大。这两种解决方案都不现实。
Near the cciling level, ie the highest level reached by nuid of the jet, jet fluid leaves the upflow region and entcrs the downflow region. Thus near the ceiling level the vertical flux ofjet fluid and the vertical flux of a tracer carried by the jet decrease with height. Neverthele· s previously published theoretical solutions to determine the coordinate of the ceiling level (PRIESTLEY and BALL r11 and MORTON 12J [3J) arc based on the assumption that the vertical nux of a tracer being contained in the jet is constant from the orifice to the ceiling level. This assumption leads to either an infinite concentration of the tracer or an infinite width of the jet at the ceiling level. Both these solutions are not realistic.