Advertisement

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

  • Tania KirmseEmail author
  • Anthony Gardner
  • Christian Krombholz
Chapter
  • 3.9k Downloads
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 121)

Abstract

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.

Keywords

Computational Fluid Dynamics Wind Tunnel Computational Fluid Dynamics Simulation Virtual Displacement Pressure Sensitive Paint 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Born, M., Wolf, E.: Principles of Optics, 6th edn. Pergamon Press (1989)Google Scholar
  2. 2.
    Elsinga, G.E., van Oudheusden, B.W., Scarano, F.: Evaluation of aero-optical distortion effects in PIV. Experiments in Fluids 39, 246–256 (2005)CrossRefGoogle Scholar
  3. 3.
    Gardner, A.D., Richter, K., Rosemann, H.: Prediction of the Wind Tunnel Sidewall Effect for the iGREEN Wing-Tailplane Interference Experiment. In: 16 DGLR-Fach-Symposium der STAB, Aachen, Germany (2008)Google Scholar
  4. 4.
    Kirmse, T., Schröder, A., Martinez Schramm, J., Karl, S., Hannemann, K.: Ap-plication of Particle Image Velocimetry and the Background Oriented Schlieren Technique in the High Enthalpy Shock Tunnel Göttingen HEG. In: 27th ISSW, St. Petersburg, Russia (2009)Google Scholar
  5. 5.
    Kraus, K.: Photogrammetrie, Band 1. 7. Auflage, de Gruyter (2004)Google Scholar
  6. 6.
    Sharma, A., Kumar, D.V., Ghatak, A.K.: Tracing rays through graded-index media: a new method. Appl. Opt. 23(10), 984–987 (1982)CrossRefGoogle Scholar
  7. 7.
    Widhalm, M., Ronzheimer, A., Meyer, J.: Lagrangian Particle Tracking on Large Unstructured Three-Dimensional Meshes. In: 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, USA, p. 472 (2008)Google Scholar

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

Personalised recommendations