Particle Image Velocimetry of bubble-in-chain flows in a laboratory tank

This dataset contains images from Particle Image Velocimetry (PIV) measurements for bubble-in-chain flows at different release frequencies (ranging 3~12 Hz). The experiments were conducted in the tank located in the Zachry Department of Civil Engineering at Texas A&M University. Bubble-in-chain flow is defined as the water flow purely introduced by the disturbance of rising bubbles in the stagnant water. In this experiment, air bubbles were supplied from a single orifice at the bottom of the tank (1 m water depth), and all bubbles have diameters of 5.5 ~ 6.5 mm. The PIV measurements were carried out to measure the mean flow and turbulence in the centerline of the bubble-in-chain induced flow, at about 0.5 m above the source. For each release frequency, four repeated runs were performed with each generating 4312 pairs of images.本数据集包含针对不同释放频率（范围为3~12 Hz）下的气泡链流（bubble-in-chain flows）的粒子图像测速（Particle Image Velocimetry，PIV）测量图像。实验于德克萨斯农工大学（Texas A&M University）扎克里土木工程系（Zachry Department of Civil Engineering）的水槽内开展。气泡链流被定义为仅由静滞水体中上升气泡的扰动诱发的水体流动。本实验中，气泡由水槽底部（水深1 m处）的单个孔口供给，所有气泡的直径介于5.5 ~ 6.5 mm之间。本次PIV测量旨在测定气泡链流诱导流的中心线处的平均流场与湍流特性，测量位置距气源约0.5 m。针对每个释放频率，均开展了四次重复实验，每次实验可生成4312对图像。