EXPERIMENTAL DATA REGARDING THE EFFECTS OF UREA ADDITION INTO LIQUID FUEL TO COMBUSTION ENHANCEMENT OF A LOW NOX GAS TURBINE COMBUSTOR

• Combustion performance data: gas flue temperature, NOx, CO2, CO, O2. The gas flue temperature was acquired at 4 Hz: the average value and the standard deviation are reported in the file COMBUSTION_PERFORMANCE.xlsx – sheet named OPERATING_CONDITIONS, in combination with the controlled data inlet gas temperature of 410 K, the fuel mass flow rate of 0.001 kg/s and the total air mass flow rate varied between 0.04 kg/s and 0.08 kg/s depending on the overall equivalence ratio. Instead, pollutant emissions were simultaneously acquired by means of the portable gas analyser model PG-350E Horiba, at sampling frequency of 1 Hz. The average value and the standard deviation of each specie concentration are reported in the file COMBUSTION_PERFORMANCE.xlsx - sheet named EMISSIONS. The files rawData_test#.xlsx, with # denoting the test case number, report the raw signal data. • Luminosity matrix of the VIS images. 100 images are provided sampled at 1 kHz corresponding to 0.1 s of investigated time. For each test case, a 3D matrix of 1024×1240x100 elements are provided in Matlab workspace data format: test1_BB.mat, test2_BB.mat, test3_BB.mat, test4_BB.mat, test5_BB.mat, test6_BB.mat. Into each Matlab data file, three variables have been stored: 1) YIC: 3D single-precision data type tensor, size 1024x1240x100 (calibration factor: 0.041 mm/pixel), representing the y-coordinate (units: pixels), the x-coordinate (units: pixels), and the number of time points, respectively. 2) nImages: integer scalar, number of images. 3) Fs: double-precision scalar, sampling frequency. • Luminosity matrix of the OH* images. 100 images are provided sampled at 1 kHz corresponding to 0.1 s of investigated time. For each test case, a 3D matrix of 966×1574x100 elements are provided in Matlab workspace data format: test1_OH.mat, test2_OH.mat, test3_OH.mat, test4_OH.mat, test5_OH.mat, test6_OH.mat. Into each Matlab data file, three variables have been stored: 1) YIC: 3D single-precision data type tensor, size 966x1574x100 (calibration factor: 0.067 mm/pixel). representing the y-coordinate (units: pixels), the x-coordinate (units: pixels), and the number of time points, respectively. 2) nImages: integer scalar. number of images. 3) Fs: double-precision scalar. sampling frequency. • Luminosity matrix of the CH* images. 100 images are provided sampled at 1 kHz corresponding to 0.1 s of investigated time. For each test case, a 3D matrix of 966×1574x100 elements are provided in Matlab workspace data format: test1_CH.mat, test2_CH.mat, test3_CH.mat, test4_CH.mat, test5_CH.mat, test6_CH.mat. Into each Matlab data file, three variables have been stored: 1) YIC: 3D single-precision data type tensor, size 966x1574x100 (calibration factor: 0.067 mm/pixel), representing the y-coordinate space (units: pixels), the x-coordinate space (units: pixels), and the number of time points, respectively. 2) nImages: integer scalar, number of images. 3) Fs: double-precision scalar, sampling frequency.• 燃烧性能数据：烟气温度、氮氧化物（NOₓ）、二氧化碳（CO₂）、一氧化碳（CO）、氧气（O₂）。烟气温度以4 Hz的频率采集，其平均值与标准差记录于文件COMBUSTION_PERFORMANCE.xlsx的OPERATING_CONDITIONS工作表中，对应的控制参数为：入口燃气温度固定为410 K，燃料质量流量为0.001 kg/s，总空气质量流量根据整体当量比在0.04 kg/s至0.08 kg/s之间变动。污染物排放数据则通过堀场（Horiba）PG-350E型便携式气体分析仪同步采集，采样频率为1 Hz，各组分浓度的平均值与标准差记录于该Excel文件的EMISSIONS工作表中。文件rawData_test#.xlsx（其中#代表测试案例编号）存储了原始信号数据。 • 可见光（VIS）图像光度矩阵。本次提供100幅以1 kHz采样的图像，对应0.1 s的观测时段。每个测试案例的光度矩阵为1024×1240×100的三维矩阵，以Matlab工作区数据格式存储，文件名为test1_BB.mat、test2_BB.mat、test3_BB.mat、test4_BB.mat、test5_BB.mat、test6_BB.mat。每个Matlab数据文件中存储了三个变量：1) YIC：尺寸为1024×1240×100的单精度数据类型张量（校准因子为0.041 mm/像素），分别对应y坐标（单位：像素）、x坐标（单位：像素）与时间点数；2) nImages：整数标量，代表图像总数；3) Fs：双精度标量，代表采样频率。 • 羟基自由基（OH*）图像光度矩阵。本次提供100幅以1 kHz采样的图像，对应0.1 s的观测时段。每个测试案例的光度矩阵为966×1574×100的三维矩阵，以Matlab工作区数据格式存储，文件名为test1_OH.mat、test2_OH.mat、test3_OH.mat、test4_OH.mat、test5_OH.mat、test6_OH.mat。每个Matlab数据文件中存储了三个变量：1) YIC：尺寸为966×1574×100的单精度数据类型张量（校准因子为0.067 mm/像素），分别对应y坐标（单位：像素）、x坐标（单位：像素）与时间点数；2) nImages：整数标量，代表图像总数；3) Fs：双精度标量，代表采样频率。 • 甲基自由基（CH*）图像光度矩阵。本次提供100幅以1 kHz采样的图像，对应0.1 s的观测时段。每个测试案例的光度矩阵为966×1574×100的三维矩阵，以Matlab工作区数据格式存储，文件名为test1_CH.mat、test2_CH.mat、test3_CH.mat、test4_CH.mat、test5_CH.mat、test6_CH.mat。每个Matlab数据文件中存储了三个变量：1) YIC：尺寸为966×1574×100的单精度数据类型张量（校准因子为0.067 mm/像素），分别对应y坐标空间（单位：像素）、x坐标空间（单位：像素）与时间点数；2) nImages：整数标量，代表图像总数；3) Fs：双精度标量，代表采样频率。