Quantitative high-speed schlieren for a transonic flow field around a supercritical airfoil
Quantitative high-speed schlieren for a transonic flow field around a supercritical airfoil
复制标题
超临界翼型周围跨音速流场的定量高速条纹
DOI：
10.1117/12.2524708
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Olivier H.
中科院分区：
文献类型：
--
作者：
Hammer B;Olivier H.
采用高速纹影系统在托普勒- z型结构中对超临界翼型周围的跨声速流场进行了流动显示。纹影照片的记录速率主要是每秒16千兆帧。从图像集可以生成条纹记录。这些条纹记录为流动分析提供了进一步的可能性，如确定激波或压力波频率。该纹影设置已扩展到一个定量纹影设置使用弱平凸透镜在设置作为“校准透镜”。这种透镜允许图像像素强度和折射角之间的定量关系。定量纹影技术提供了可能性，以确定密度梯度，以及流动密度远离翼型。
A high-speed schlieren system in a Toepler-Z configuration is used for flow visualization for a transonic flow field around a supercritical airfoil. Schlieren pictures have been recorded mainly at a framerate of 16 kfps. From the set of images streak records can be generated. These streak records offer further possibilities of flow analysis like the determination of shock or pressure wave frequencies. The schlieren setup has been extended to a quantitative schlieren setup using a weak plano-convex lens in the setup as a “calibration lens”. This lens allows a quantitative relationship between the image pixel intensity and the refraction angle. The quantitative schlieren technique offers the possibility to determine the density gradient as well as the flow density far away from the airfoil.
路德维格管中跨音速测试段流动的实验表征
影响因子：
5.6
作者：
Hammer B;Olivier H.
通讯作者：
Olivier H.