Recent Advances in Optical Techniques for Aerodynamics

Dear Colleagues,

Since the beginning of fluid dynamics studies, optical techniques were very attractive but mainly considered as means to get a qualitative “picture” of the flow. Over the last few decades, starting with Laser-Doppler Velocimetry, optical techniques became real measurement techniques, very appreciated for their low intrusivity. With the development of Particle Image Velocimetry, optical techniques allowed the collection of quantitative information on the whole flow field over an area and, more recently, over a volume. The increasing of cameras and computer power increased decisively the area of application of these tools, including large scale and high speed aerodynamic tests. In addition to that, again thanks to the development of video-cameras performances and computing power, “old” techniques as Schlieren photography are also living a second youth. Furthermore, a complementary branch of this methods consists in the numerical techniques that couple the measured flow field data with the fluid-dynamics equations allowing to derive quantities that are not directly measured.

In short, the entire field is rapidly evolving and, day after day, new ideas arise. Therefore we think it is very interesting and inspiring to collect new advances in this area in a specific journal volume that can constitute a picture of the state of the art.

Prof. Giuseppe Gibertini
Guest Editor

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• Optical Techniques
• Laser Doppler Velocimetry (LDV)
• Particle Image Velocimetry (PIV)
• Tomographic PIV
• Schlieren
• Postprocessing
• Pressure Sensitive Paint
• Infrared Thermography