Velocity Measurement by PIV Using W-Shaped Scanning Light Sheet

Abstract

This study proposes a three-dimensional (3D) particle image velocimetry (PIV) method using Wshaped light sheet and color PIV with a digital SLR camera. The uncertainty of the velocity measurement was also studied and it was acceptable. The spatial resolution of the z-direction has much room for improvement by increasing the number of cameras. When applied to the velocity distribution measurement of a thermal vertical buoyant plume, the proposed 3D PIV method is found to be very effective for studying thermal structures and well suited for measuring the airflow velocity field.