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Educational experiments with Particle Image Velocimetry in a small Prandtl water tunnel

2025/08/04 by William Thielicke, Thielicke, William, Steffen Risius +1
Engineering · Physics and Astronomy · #76-05 #Experimental and Theoretical Physics Studies #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Vibration Analysis #Fluid dynamics and aerodynamics studies #Physics Education (physics.ed-ph)

paper · pdf · doi:10.48550/arxiv.2508.02147

openalex publication_date 2025/08/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A small water tunnel was designed as a table top experiment to visualize and measure basic fluid dynamic phenomena. The visualization of the flow by a laser light sheet and the measurement with Particle Image Velocimetry (PIV) proves to be very instructive for teaching high school and university students. Three basic fluid dynamic experiments are reported: the determination of the vortex shedding frequency of a cylinder (von-Karman vortex street), the measurement of circulation around a flat plate and the lift coefficient of a NACA profile. All three experiments show good agreement with theoretical expectations.

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