Special methods
Fluid mechanics - Visualization by index variation
Article REF: AF3332 V1
Special methods
Fluid mechanics - Visualization by index variation

Authors : Jean-Pierre PRENEL, Paul SMIGIELSKI

Publication date: July 10, 1999 | Lire en français

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6. Special methods

The aim of this chapter is to show that very specific flow visualization problems can be effectively solved by optically performing complex mathematical operations such as gradients, Fourier transforms and Dalembertian transforms.

6.1 Demonstration of optical path gradients in all directions of the plane

To demonstrate unsteady aerodynamic phenomena (coherent structures, turbulence) as a function of time and to validate numerical simulations, a special strioscopic set-up was used [54] .

Figure 24 describes the optical system. The essential element...

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