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Updated: Feb 14, 2026

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
High-performance color sequence particle streak velocimetry for 3D airflow measurement
Abstract:
In this paper, a high-performance color sequence particle streak velocimetry (CSPSV) technique is proposed to measure the air velocity in a large three-dimensional (3D) space. Based on the basic principle of CSPSV, a new color sequence illumination pattern is designed to mark seeding bubbles for better imaging performance. Synchronized with the illumination system, cameras record the targets' paths at the start, middle, and end points with different color information more clearly. Thus, a rectification-based stereo corresponding algorithm is presented to reconstruct the 3D trajectory of the bubbles. The accuracy of this system is verified and shows good consistency with a hot-wire anemometer (the principal research tool for turbulent-flow studies). The vortex test experiments also indicate its capability for complex airflow. Our high-performance CSPSV can extend the 3D measurement zone from several cubic centimeters to several cubic meters with regular, off-the-shelf cameras.
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