Lei Qingchun, Wu Yue, Xiao Heng, Ma Lin
Appl Opt. 2014 Oct 1;53(28):6389-98. doi: 10.1364/AO.53.006389.
This work reports the demonstration and analysis of four-dimensional (4D) imaging measurements in two-phase flows using fiber-based endoscopes (FBEs). Such 4D measurements resolve the droplet distribution in two-phase flows in all three spatial directions and with a temporal resolution of up to 5 kHz. Demonstration measurements were performed in a measurement volume of 85 mm × 85 mm × 85 mm discretized into 64 × 64 × 64 voxels to illustrate FBEs' potential for facilitating practical implementation of 4D tomographic measurements. Mathematical analyses were performed to quantify the fundamental advantage of FBEs to enhance the reconstruction fidelity.
这项工作报告了使用基于光纤的内窥镜（FBE）对两相流进行四维（4D）成像测量的演示和分析。这种4D测量可在所有三个空间方向上解析两相流中的液滴分布，时间分辨率高达5kHz。在一个85mm×85mm×85mm的测量体积中进行了演示测量，该体积离散为64×64×64体素，以说明FBE在促进4D断层测量实际应用方面的潜力。进行了数学分析以量化FBE增强重建保真度的基本优势。
