The study on oscillations of an opposing jet flow

Chengbin, Jin; Wang, Zhenqing; Lv, Hongjun; Zhang, Cuie; Wang, Yongjun

doi:10.1109/isscaa.2008.4776290

Cited by 1 publication

(1 citation statement)

References 3 publications

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“…In recent years, China has gradually begun to study the problem of drag reduction and heat reduction of high-speed aircraft. Wang et al numerically studied the thermal protection of the jet flow and analyzed the influence of the flow control parameters on the drag reduction and heat reduction effect of the jet flow [14][15][16]. Zhao and Jiang studied the experimental study and numerical simulation of the drag reduction mechanism of jet ions [17] and discussed the effects of plasma energy, ignition position, and shape on the drag reduction performance.…”

Section: Introductionmentioning

confidence: 99%

Research on Control Technology of Jet and Rectifying Cone Combined Flow Field

Lei

Wang

et al. 2020

International Journal of Aerospace Engineering

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As an active flow field control technology, reverse jet and rectifier cone can significantly affect the flow field around the high-speed aircraft and reduce the drag and heat of high-speed aircraft to a certain extent. In this paper, the CFD numerical method is used to simulate and analyze the flow around the bluff body front rectifier cone and the reverse jet interference flow field. Further considering the combination of the two, the flow field structure around the bluff body under the combination of rectifying cone and reverse jet flow was simulated. Research shows, for the flow field of a single reverse jet, the pressure ratio of the reverse jet to the main flow has a significant effect on the drag reduction performance. With the change of the pressure ratio of the jet to the main flow, two modes of long jet and short jet will appear. The structure of the short jet modal flow field is relatively stable. However, with the increase of attack angle, the shear layer of free flow will attach to the shock wave and form hot spot, which is a great threat to high-speed aircraft. When the rectifier cone and the reverse jet are combined, within a certain angle of attack, the wall will not form a reattachment shock wave. The area behind the bow shock and in front of the aircraft head is a free-state zone, which has a good cooling effect on the aircraft head. At the same time, the static pressure on the wall is reduced, which has a very good drag reduction effect.

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Section: Introductionmentioning

confidence: 99%