Analysis of four-dimensional Mie imaging using fiber-based endoscopes

被引：14

作者：

Lei, Qingchun ^{[1
]}

Wu, Yue ^{[2
]}

Xiao, Heng ^{[2
]}

Ma, Lin ^{[1
,2
]}

机构：

[1] Virginia Tech, Dept Engn Mech, Blacksburg, VA 24060 USA

[2] Virginia Tech, Dept Aerosp & Ocean Engn, Blacksburg, VA 24060 USA

来源：

APPLIED OPTICS | 2014年 / 53卷 / 28期

基金：

美国国家科学基金会;

关键词：

HYPERSPECTRAL TOMOGRAPHY; ABSORPTION-SPECTROSCOPY; ENGINE; TEMPERATURE; VALIDATION; COMBUSTION; FLAMES; KHZ;

D O I：

10.1364/AO.53.006389

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 x 85 mm x 85 mm discretized into 64 x 64 x 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. (C) 2014 Optical Society of America

引用

页码：6389 / 6398

页数：10

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