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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-Kármán 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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Educational Experiments with Particle Image Velocimetry in a Small Prandtl Water Tunnel

  • 会议论文

  • 发表日期：

    2026年

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  • William Thielicke,
  • Steffen Risius

摘要

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-Kármán 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.