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What are the quantitative flow visualization techniques?

(a) Smoke flow visualization

(b) Surface framing

(c) Shadow projecting

(d) Shadow graphic technique

I have been asked this question in exam.

My doubt is from Lifting Flow over Cylinder topic in section Inviscid & Incompressible Flow of Aerodynamics

1 Answer

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Best answer
Right option is (a) Smoke flow visualization

The explanation is: The visualization technique such as smoke flow visualization, surface oil film technique, particle image velocimetry have been employed to locate the position of transition and separation of a boundary layer.

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