一套应用于拖曳水池中的水下立体粒子成像测速(PIV)系统

In January 2004, Memorial University purchased a stereoscopic Particle Image Velocimetry
(PIV) system for making flow measurements. Although the system was potentially very
versatile, its primary application was envisioned to be in a towing tank. The system was
supplied as a complete package of hardware and software for calibration, data collection and
analysis. The intention of the PIV system designers was to collect as many data frames as
possible for a fixed measurement plane location, relative to the model. This required the PIV
system to be fixed on the towing carriage, moving with the model being studied. It was found
during some preliminary experiments that an active seeding delivery system was necessary to
ensure sufficiently high seeding particle concentration, especially when measuring flow
velocities around a model hull with a large yaw angle. This paper describes the development of
a seeding technique for a PIV system that can be used in a towing tank. The paper also includes
an estimate of the uncertainty of the measurement system, including the analysis of the flow
behind the device used to deliver seed particles into the flow. 水下粒子成像测速系统(Under Water PIV) Imager SX PIV相机 用于粒子成像测速(PIV)的荧光示踪粒子