涡流发生器控制下横向射流穿透特性及优化

赵延辉; 梁剑寒; 闫田田

doi:10.13224/j.cnki.jasp.2016.04.005

涡流发生器控制下横向射流穿透特性及优化

doi: 10.13224/j.cnki.jasp.2016.04.005

国防科学技术大学航天科学与工程学院高超声速冲压发动机技术重点实验室, 长沙 410073

基金项目:

国家自然科学基金(11472304)

详细信息

作者简介:
赵延辉(1987-),男,山东东营人,博士生,主要从事高超声速推进技术研究.

中图分类号: V235
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- 被引次数: 0
出版历程
- 收稿日期: 2015-04-25
- 刊出日期: 2016-04-28

Penetration characteristics and optimization of transverse jet on condition of vortex generator

Science and Technology of Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

摘要

摘要: 在喷孔上游放置涡流发生器(VG),采用纳米粒子平面激光散射系统(NPLS)和粒子图像测速(PIV)技术对5种构型的VG诱导横向射流的流场进行了观测,提取其穿透深度并进行对比,结果表明在喷孔上游放置VG使射流穿透深度提高了30%~60%.对VG构型的几何参数、射流/来流动压比及VG流向位置等变量进行敏感性分析,表明射流/来流动压比对射流穿透深度的促进作用最大.根据目标函数进行了优化设计,表明当VG半锥角为36°、坡度为6°、VG尾缘与喷孔中心无量纲距离为38.8、射流/来流动压比为10.6时,无量纲穿透深度存在最优值12.68.
- 横向射流 /
- 涡流发生器 /
- 被动控制 /
- 穿透深度 /
- 优化设计
Abstract: Vortex generator (VG) was placed at the upstream of jet orifice. Nano-particle plane laser scattering system(NPLS) and particle image velocimetry(PIV) technology were employed to observe the flow field of transverse jet on condition of VG with five different configurations. Penetration depth of transverse jet was extracted and compared. Penetration depth was enhanced 30%-60% higher by placing VG at the upstream of jet orifice. Sensitivity analysis of VG configuration parameters, jet to mainstream momentum ratio and distance between VG and jet orifice was proceeded. It turns out that jet to mainstream momentum ratio plays a dominate role in jet penetration depth. Those parameters were optimized based on target function. It is revealed that the top value of dimensionless jet penetration depth is 12.68 while VG half cone angle is 36°, VG gradient angle is 6°, dimensionless distance between VG trailing edge and jet orifice is 38.8 and jet to mainstream momentum ratio reaches 10.6.
- transverse jet /
- vortex generator /
- passive control /
- penetration depth /
- optimization design

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参考文献(19)

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