Mixing of Twin Supersonic Swirling Jets Injected from a Ramp
Mixing of Twin Supersonic Swirling Jets Injected from a Ramp
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从坡道喷射的双超音速旋转射流的混合
DOI：
10.2322/jjsass.52.16
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
G. Masuya
中科院分区：
文献类型：
--
作者：
Keiko Amakusa;H. Yaguchi;Kentaro Suzuki;K. Takita;G. Masuya
对双旋氦气射流从斜板喷入超声速气流中的混合进行了实验研究，以阐明斜板引入的旋涡与旋涡之间的相互作用。通过更换圆柱形腔室来改变涡流的方向和强度，注射剂通过圆柱形腔室被引入到注射器。涡流的方向与斜板涡的方向相同或相反。在三个横截面上测量了氦浓度分布。同一方向的旋流将注入液带到两股射流的中心平面并合并成一股射流，而相反方向的旋流将两股射流分开。然而，在不同的方向和强度的涡流试验中观察到的最大氦气浓度没有显著差异。
Mixing of twin swirling helium jets injected from a ramp into a supersonic airstream was experimentally investigated to clarify the interaction between the vortices introduced by the ramp and the swirl. The direction and strength of the swirl were changed by replacing cylindrical chambers through which the injectant was introduced to the injector. The direction of the swirl was either same as or opposite to that of the ramp vortex. Helium concentration distributions were measured in three cross sections. The swirl in the same direction brought the injectant to the center plane of the two jets and merged to a single one, while that in the opposite direction kept each jet apart. However, there was no significant difference in the maximum concentration of helium observed in the tests with different directions and strength of the swirl.