HYSTERETIC INTERACTION OF CONICAL LIQUID SHEETS FROM COAXIAL ATOMIZERS : INFLUENCE ON THE SPRAY CHARACTERISTICS
HYSTERETIC INTERACTION OF CONICAL LIQUID SHEETS FROM COAXIAL ATOMIZERS : INFLUENCE ON THE SPRAY CHARACTERISTICS
复制标题
DOI：
10.1063/1.869663
复制
发表时间：
1998-05
影响因子：
4.6
通讯作者：
D. Sivakumar;B. Raghunandan
中科院分区：
文献类型：
--
作者：
D. Sivakumar;B. Raghunandan
在液体双组元推进剂火箭中使用的同轴涡流喷射器的背景下，对薄同轴锥形液体片之间的相互作用进行了详细的实验研究。随着流速的增加，片材彼此靠近并在确定的流动条件下合并。内部射流的存在会影响外部射流的行为，甚至在合并之前也是如此。合并和分离过程表现出滞后现象。这会导致喷雾特性发生巨大变化，具体取决于滞后状态的方法。许多这些特征以及接触点移动的特征都可以追溯到两块板之间的空腔中静压力发生的变化。
In the context of coaxial swirl injectors used in liquid bipropellant rockets, a detailed experimental study has been made on the mutual interaction between thin coaxial, conical liquid sheets. As the flow rates are increased, the sheets move close to each other and merge at a definite flow condition. The presence of the inner jet influences the behavior of the outer jet, even before merging. The merging and separation processes exhibit hysteresis. This leads to drastic variations in spray characteristics depending on the approach to the hysteresis regime. Many of these features as well as those on the movement of the contact point can be traced to changes occurring in the static pressure in the cavity between the two sheets.