Velocity Vector Data from PIV Measurements of Bass Recorder Interior under Normal Playing Conditions

This dataset includes two types of measurements:1) Full length measurement spanning the whole length of the transparent bore of the bass recorder comprised of multiple measurements that can be tiled to obtain full length measurement. This set of measurements features a naming scheme:Ux*** - horizontal velocity vectorsUy*** - vertical velocity vectors **F** - first tone hole position (in the paper referred to as x_1)**L** - last tone hole position (in the paper referred to as x_2) ***12 - tone hole diameter in millimetres These files are python 'dict' type objects. Example case structure of horizontal velocity vector for the case of 9 mm tone hole at the tone hole position p_2:Filename: 'UxF09.mat'Type: dictDictionary keys: '0', '1', '2', '3', '4', '5', '6', '7' 2) Local flow velocity measurement under the tone hole position x_1. This set of measurements features a naming scheme:UxZoomed_* - horizontal velocity vectorsUyZoomed_* - vertical velocity vectors U*Zoomed_D - non-undercut tone hole casesU*Zoomed_U - undercut tone hole cases These files are python 'dict' type objects. Example case structure of non-undercut horizontal velocity vector object:Filename: 'UxZoomed_D.mat'Type: dictDictionary keys: '06', '09', '12', '15', '17'本数据集包含两类测量数据： 1) 全长测量：覆盖低音直笛（bass recorder）透明管腔全段，该类测量由多组可拼接的分段测量组成，以得到完整的全长测量数据。该组测量采用如下命名规则： Ux*** —— 水平速度矢量；Uy*** —— 垂直速度矢量 其中：**F** 代表第一音孔位置（本文中记为x₁）；**L** 代表最后一个音孔位置（本文中记为x₂）；***12 代表以毫米为单位的音孔直径。 此类文件均为Python字典（dict）类型对象。以音孔位置p₂处、音孔直径9mm的水平速度矢量场景为例： 文件名：'UxF09.mat' 数据类型：dict 字典键值包含：'0'、'1'、'2'、'3'、'4'、'5'、'6'、'7' 2) 音孔位置x₁下方的局部流速测量。该组测量采用如下命名规则： UxZoomed_* —— 水平速度矢量；UyZoomed_* —— 垂直速度矢量 U*Zoomed_D —— 非切槽音孔场景；U*Zoomed_U —— 切槽音孔场景 此类文件均为Python字典（dict）类型对象。以非切槽水平速度矢量对象为例： 文件名：'UxZoomed_D.mat' 数据类型：dict 字典键值包含：'06'、'09'、'12'、'15'、'17'