Fluids Measurements and Design of Experiments

Markus Schödel, M. Sc.

The theoretical and practical basics of experimental fluid mechanics will be taught in this lecture. Main topics are the methods of temperature, pressure, velocity, wall friction and density measurement using probes and optical measurement techniques (e.g., L2F, LDA, PIV, BOS). In addition to the theoretical fundamentals of the measurement methods, practical aspects are examined and visualized by demonstration and experiment. In the course of the lecture, aerodynamic test facilities of DLR will be visited and their methodology will be explained. The practice-oriented lecture is especially intended for students with fluid mechanics as major field of study

• Test facilities and laws of scale
• Flow measurements by probes
• Pressure measurements
• Laser-2-Focus Anemometry (L2F)
• Laser Doppler Anemometry (LDA)
• Pressure measurements by “pressure-sensitive paint“ (PSP)
• Flow visualization
• Doppler Global Velocimetry (DGV)
• Particle Image Velocimetry (PIV)
• Shadowgraph and Schlieren technique by Foucault knife-edge
• Background Oriented Schlieren Method (BOS)
• Flow and temperature measurements

• Basics of Measurement Techniques
• Fluid Mechanics I and II

• Lecture notes

The block course will take place at the German Aerospace Center (DLR) in Göttingen.

In addition to the theoretical part in the morning, the measurement techniques introduced are demonstrated and explained in the afternoon by the respective scientists using the example of the test facilities of the DLR Göttingen.