Quantitative high-speed schlieren for a transonic flow field around a supercritical airfoil

B. Hammer; H. Olivier

doi:10.1117/12.2524708

28 January 2019 Quantitative high-speed schlieren for a transonic flow field around a supercritical airfoil

B. Hammer, H. Olivier

Proceedings Volume 11051, 32nd International Congress on High-Speed Imaging and Photonics; 110510L (2019) https://doi.org/10.1117/12.2524708
Event: International Conference on High-Speed Imaging and Photonics 2018, 2018, Enschede, The Netherlands

Abstract

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.

Citation Download Citation

B. Hammer and H. Olivier "Quantitative high-speed schlieren for a transonic flow field around a supercritical airfoil", Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 110510L (28 January 2019); https://doi.org/10.1117/12.2524708

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available