航空null检测 | 热焰与2马赫速度背景流动的相互作用的实验研究-北京欧兰科技发展有限公司

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采用LaVision的时间分辨PIV系统测量了固体火箭发动机在风洞中的热气流喷射过程，并研究了喷射火焰热的内核与环绕热核的外部气体流动之间的相互作用。

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A wind tunnel model containing a solid rocket motor

was tested at Mach 2 to assess the feasibility of

investigating the interaction between a hot plume and a

high-speed outer stream. In addition to Schlieren

visualisation, the feasibility of applying PIV was

explored. Recorded particle images revealed that the hot

plume scatters and reflects laser light, leading to a

strong deterioration of the illumination conditions in

regions within and near the plume. Suitable processing

of the particle images could partly compensate for this

and reliable velocity measurements could be obtained in

directly illuminated regions. In regions near the base

and below the plume, velocity measurements could still

be obtained but were considered to be of lower quality.

No reliable velocity measurements could be obtained

within the plume itself.

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北京欧兰科技发展有限公司

金牌会员丨第17年

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