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arXiv 0810.1957physics.flu-dyn
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斜喷流进入超音速横流的LES

LES of an inclined jet into a supersonic cross-flow

Antonino Ferrante, Carlos Pantano-Rubino, Georgios Matheou, Paul E. Dimotakis, Mike Stephens, Paul Adams, Richard Walters, Randall Hand

摘要:

本文介绍了流体动力学视频大涡模拟中的流动参数、数值方法和动画。氦气通过一个倾斜的圆形喷流喷入马赫数为3.6的超音速气流中。视频显示了马赫数和密度梯度大小的二维等值线,以及氦质量分数和旋涡结构的三维等值面。采用亚网格尺度(LES-SGS)拉伸涡模型对湍流和标量输运进行大涡模拟,得到了主要的流动特征:弓形激波、马赫盘、剪切层、反向旋转涡和大尺度结构。

英文摘要:

This short article describes flow parameters, numerical method, and animations of the fluid dynamics video LES of an Inclined Jet into a Supersonic Cross-Flow (http://hdl.handle.net/1813/11480). Helium is injected through an inclined round jet into a supersonic air flow at Mach 3.6. The video shows 2D contours of Mach number and magnitude of density gradient, and 3D iso-surfaces of Helium mass-fraction and vortical structures. Large eddy simulation with the sub-grid scale (LES-SGS) stretched vortex model of turbulent and scalar transport captures the main flow features: bow shock, Mach disk, shear layers, counter-rotating vortices, and large-scale structures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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