Study of Interaction between Unsteady Supersonic Jet and Shock Waves in Elliptical Cell
Study of Interaction between Unsteady Supersonic Jet and Shock Waves in Elliptical Cell
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椭圆室内非定常超音速射流与冲击波相互作用的研究
DOI：
10.1299/jfst.3.881
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发表时间：
2008
影响因子：
0.8
通讯作者：
T. Takiya
中科院分区：
文献类型：
--
作者：
H. Fukuoka;M. Yaga;T. Takiya
通过求解二维轴对称可压缩Navier-Stokes方程，研究了突然注入细胞内的射流驱动的非定常流动行为。计算系统是一个持续一定时间的激光烧蚀，然后通过电池下游端的出口孔放电过程的模型。计算的参数是孔的直径、孔的出口直径和喷射持续时间。在出口孔处监测的速度用于评估电池形状和出口直径对激波、羽流及其相互作用的影响。结果发现，在各种参数下，激波的收敛位置和椭圆单元的焦点几乎相同。在几何焦点处会聚的扩张性激波从细胞壁反射回来，并在射流注入和细胞出口之间交替发生。峰的数目和胞口下游的最大速度大致由椭圆胞壁的轮廓决定。
The unsteady behavior of a flow driven by a jet suddenly injected into cells is investigated numerically by solving the axisymmetric two-dimensional compressible Navier-Stokes equations. The system of the calculation is a model of laser ablation of a certain duration followed by a discharging process through the exit hole at the downstream end of the cell. The parameters for the calculations are the diameter of the cell, the exit diameter of the cell and the duration of the injected jet. The velocity monitored at the exit hole is used to evaluate the influence of the shape and the exit diameter of the cell on the shock wave, the plume, and their interactions. As a result, it was found that the position in which the shock wave converges and the focal point of the elliptical cell are almost the same for various parameters. The spreading shock wave that converged at the geometrical focal point reflects from the cell wall and this shock wave alternate between the jet injection and the cell exit. It was also found that the number of peaks and the maximum velocity downstream of the cell exit are roughly determined by the contour of the walls of the elliptical cell.
超声速射流侵入小出口椭圆孔驱动非定常可压缩流的数值研究
DOI：
--
发表时间：
2005
期刊：
Shock waves Vol.14,No.5/6
影响因子：
--
作者：
Minoru Yaga;他2名
通讯作者：
他2名