Compressible Flow Structures Interaction with a Two-Dimensional Ejector: A Cold-Flow Study
Compressible Flow Structures Interaction with a Two-Dimensional Ejector: A Cold-Flow Study
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DOI：
10.2514/1.39315
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发表时间：
2009-05
影响因子：
1.9
通讯作者：
H. Zare-Behtash;K. Kontis
中科院分区：
文献类型：
--
作者：
H. Zare-Behtash;K. Kontis
利用激波管装置进行了一项实验研究，以考察激波和旋涡等可压缩流动结构与二维喷射器几何形状的相互作用。采用了P4/P1=4、8和12的三种隔膜压力比，其中P4是驱动气体压力，P1是激波管从动室内的压力。这导致入射激波马赫数M_1分别为1.34、1.54和1.66。激波管驱动段的长度为700 mm。空气既用于驱动气体，也用于驱动气体。采用高速阴影成像技术对诱导流场进行可视化处理。在试验段的不同位置进行了压力测量，以定量地研究流动。诱导流是非定常的，取决于由膜片破裂产生的初始激波的可压缩程度。
An experimental study has been conducted to examine the interaction of compressible flow structures such as shocks and vortices with a two-dimensional ejector geometry using a shock-tube facility. Three diaphragm pressure ratios of P 4 /P 1 = 4, 8, and 12 have been employed, where P 4 is the driver gas pressure and P 1 is the pressure within the driven compartment of the shock tube. These lead to incident shock Mach numbers of M, = 1.34,1.54, and 1.66, respectively. The length of the driver section of the shock tube was 700 mm. Air was used for both the driver and driven gases. High-speed shadowgraphy was employed to visualize the induced flowfield. Pressure measurements were taken at different locations along the test section to study the flow quantitatively. The induced flow is unsteady and dependent on the degree of compressibility of the initial shock wave generated by the rupture of the diaphragm.