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Title: Turbulent spot

Description: This image is a top view of a turbulent boundary layer flowing left to right on top of a viscoelastic coating. Static-divergence waves forming on the compliant coating are clearly depicted. Flood light illumination and dye traces are used to color the PVC plastisol gel.

Credits: M. Gad-el-Hak


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and for images is Jean Hertzberg (
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