Abstract
Turbulent flows inherently feature 3D spatial structures and temporal dynamics. As a result, 4D experimental techniques have been long desired to fully resolve turbulent flows in all three spatial directions and time. This work describes the demonstration of such 4D measurements in two-phase flows using computed tomography and Mie scattering. Demonstration measurements were performed in airflows seeded with water droplets at a 5 kHz frame rate, with an exposure time of 0.2 ms and a measurement volume of discretized into voxels. Experimental and computational studies have been conducted, with a focus on comparison and validation of the 3D reconstructions against experiments performed in flows with recognizable patterns.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Qingchun Lei, Yue Wu, Heng Xiao, and Lin Ma
Appl. Opt. 53(28) 6389-6398 (2014)
Xuesong Li and Lin Ma
Opt. Express 22(4) 4768-4778 (2014)
Rikard Wellander, Mattias Richter, and Marcus Aldén
Opt. Express 19(22) 21508-21514 (2011)