Investigation of Aero-Optical Effects in Model Deformation Measurements in a Transonic Flow

  • Tania KirmseEmail author
  • Anthony Gardner
  • Christian Krombholz
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 121)


The influence of strong density gradients on the accuracy of model deformation measurements by means of the Image Pattern Correlation Technique (IPCT) was investigated for a 2D-NACA0010 airfoil in the Transonic Wind Tunnel Göttingen. To ensure a visible aero-optical effect the measurements were performed at Mach 0.8 and 0.85 at angles of attack of up to 5°. Ray tracer simulations based on numerical simulation of the flow were used to optimize the test set-up and to compare the measurement results with the CFD simulations. The measurements performed demonstrate that the view direction of the cameras with respect to the shock has a strong influence whether an aero-optical effect can be observed or not. The comparison with CFD calculations by means of a ray tracer method showed that the ray tracer is an appropriate tool to optimize the experimental set-up.


Computational Fluid Dynamics Wind Tunnel Computational Fluid Dynamics Simulation Virtual Displacement Pressure Sensitive Paint 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Tania Kirmse
    • 1
    Email author
  • Anthony Gardner
    • 1
  • Christian Krombholz
    • 1
  1. 1.Institute of Aerodynamics and Flow TechnologyDLR GöttingenGöttingenGermany

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